1. You are impatient and are unable to wait your way through card death / downswings:
a. You play marginal hands or play too many hands out of position.
b. You tell yourself your "table image" justifies spewy plays it does not.
c. You make too many calls of multiple bets pre-flop.
d. You get too bluffy when you do play a hand after many folds and a slow burn of chips.
e. You convince yourself that you can "outplay" players in situations where they are likely to have decent hands.
2. You don't pay enough attention to what other players are doing, especially when you have folded your hand.
3. Your play incorporates too much psychology and not enough math.
4. You don't value bet enough on the river.
5. You don't bet-fold enough.
6. In no limit, you undersize your value bets.
7. You slowplay and trap too much.
8. You drink too much while you are playing.
9. You do things that slow down the game and cut into your winrate:
a. You are too much of a rules nit when other players do things that are technical violations but where their intention was clear.
b. You slowroll.
c. You Hollywood too much, especially when folding a missed draw on the river or mucking a clearly second-best hand at showdown.
d. You insist on the order of showdown when you are pretty sure you have the best hand.
e. You fail to pay attention as to when the action is on you and what the betting is.
f. You invoke "I want to see that hand".
g. You ask for set-ups other than to replace a bad card / damaged deck.
h. In limit, you Hollywood in various convoluted ways to try and win one additional big bet rather than just betting out quickly.
i. You act out of turn.
10. You jump to too-hasty conclusions about players' tendencies based on a single hand.
11. You misread the board and muck the best hand.
12. You call too many raises from nits.
13. In no limit, you don't size your raises properly.
a. You min-raise all your monsters.
b. You don't plan your bet sizes when you feel you have a very strong hand to ensure it all gets in the middle with a reasonably sized river bet.
14. You don't bluff enough against nits.
15. You bluff too much against calling stations and fish.
16. You don't change seats enough.
17. You don't know when to leave the table:
a. You continue to play when you are behind and try to break even for the session / week / month.
b. You continue to play after a bunch of sharks sit down and you no longer have an advantage.
18. You are overly concerned with results for this session.
19. You play above your bankroll.
20. You don't utilize re-buy rules effectively and end up short-stacked when you make a monster hand.
21. You don't keep careful and accurate records of your play.
22. You don't do session reviews and go over key hands (and post them on 2+2 or other poker fora when necessary).
23. You call the floor too often.
24. You are way too concerned with trivialities:
a. You spend too much time thinking about how to play with your chips or to stack them.
b. You wear the hoodie / ipod / sunglasses.
25. You go on tilt and change your play as a result of bad beats.
26. You get angry at other players (except where absolutely warranted by extreme and outrageous conduct).
27. You are unable to wait patiently for a seat and play games that you aren't any good at or have no advantage in while waiting.
28. You believe that your winrate during a big upswing is sustainable.
29. You wager money you can't afford to lose.
30. You don't know how many hands it is necessary to play to have a statistically significant sample.
31. You play when you are too tired and can't make good decisions.
32. You watch too many sports on the television screens while playing.
33. You don't choose a game that has a beatable rake structure.
34. You don't take advantage of casino rewards programs that offer meaningful benefits.
35. You play too much out of position and/or not enough in position.
36. In limit kill games, you don't sufficiently consider the cost of posting a kill blind.
37. You refuse to chop the blinds in games where chopping is +EV.
38. You antagonize bad players who will be less likely to continue playing if you piss them off.
39. In limit games, you raise too much on the turn and not enough on the flop.
40. You bluff without telling a plausible story in your betting.
41. You call too many turns with draws getting insufficient odds.
42. You limp out of position.
43. In limit, you cold-call raises.
44. You misplay AA and KK pre-flop because you are too afraid of not getting any callers or getting too many of them, and as a result you fail to get value.
45. You misplay AA and KK post-flop, usually by getting married to them in situations where they are too often beat.
46. You try to put opponents on specific hands instead of ranges.
47. Against good opponents, you fail to balance your own ranges.
48. You set-mine without proper odds to do so.
49. You pay insufficient attention to stack sizes.
50. You pay insufficient attention to pot sizes.
51. Your betting allows observant opponents to play perfectly against you.
52. You are superstitious.
53. You act in a confusing manner (such as checking with chips in your hand, putting the amount for a raise out and then pulling it back so only a call remains, etc.), which can result in an adverse floor ruling if people are misled and complain.
54. In no-limit, you over-defend your blinds.
55. In any game with blinds, you take offense when someone raises and you are in the blinds, rather than dispassionately analyzing the range you should play against that opponent and folding if you have a hand that does not fall within that range.
56. In no-limit, you play suited connectors when effective stacks are too small and opponents' ranges are too strong to justify it.
57. You assume everyone who raised pre-flop has ace-king whether or not the circumstances warrant it.
58. You let opponents get there too often.
59. You are overconcerned with absolute hand strength and underconcerned with relative hand strength.
60. When you come back to the table after a break, change tables, or first sit down, you are too impatient to wait for whatever the most favorable position to post or come in is.
61. You tell yourself you can outplay players post-flop who are actually equal to or better than you in their post-flop play.
62. You play a short stack without a developed short stack strategy.
63. You underestimate players because of prejudice (old man can't be aggressive, Asian must be a gambling donk, woman can't really know how to play, etc.).
64. You get pissed off when players you consider to be worse than you run good and make money in the short term while you are bleeding chips.

This has been a public service announcement.

Well I am glad I never do any of those things anymore. I just lose due to "Bad Luck" LOL, very nice post lawdude!

so how does slow rolling influence my ROI OP?

I included the explanation in my OP. Slowing up showdowns, if you are a winning player, reduces your hourly winrate. (Plus, if you are consciously deciding to slowroll, you are focusing on aspects of the game which are of less importance than other things that could be in your brain such as your own leaks, ranges, math, etc.

I suppose...

then again, it could be that I am studying some mugs raggedy arse to pick up on tells on him that I could later in the session.

Good post. The one thing I would like everyone to improve on is helping to make the game quicker. Very few people consider this as a way of improving your winrate, but more hands per hour means more $ per hour. And when you are playing in a time game instead of a raked game, that is even more true since you are also saving on rake every extra hand you get out.

Also, if people are improving this, it isn't hurting me where improving other parts of their game could impact my winrate if they play in the same game as me.

A main thing I do is help to collect the time during the dealer change, this can save up to a full minute each dealer change, which is 1-2 hands per hour. That can increase my winrate by almost 5%!

I am not sure what you are saying here?

I general I agree more hands, more better... people still use hour rate to figure success?

In bigger games, instead of rake being paid each hand, it is collected every half an hour. For example at CAZ, the time is $7 per half hour. So at the dealer change, the new dealer has to ask each player for $7, give change to the people who put out $10, and then confirm it is indeed the $63 they need to continue (assuming full table 9 handed).

Now when I am in the 5 seat, I make sure I have a good amount of white chips to help with this. While the one dealer is finishing and the next is sitting down and getting situated, I put my $7 out and ask for anyones who doesn't have it, and then make the change and collect it from one side or both sides if I can in time before the dealer is ready to start.

TL;DR

^^ my attention span is the biggest reason

So are you going to pay for everyone's cataract surgery since you didn't have the decency to use any spaces or bold text?

Pork:

Hit control and the plus key

I hate it when a player takes it upon themselves to collect the time. please do not touch my chips, thank you.

also, lawdude, 37a should be "you chop the blinds in games where playing is +EV"

Yabbut it is pretty much never +EV to play, at least in California raked games.

This

Please don't feed the troll.