I swear to you guys I'm absolutely not a hater. That said, I just can't get my head around the idea that someone can have one job that they work 4 or 5 hours a day, 5 days a week, can wear what they want, eat and take breaks whenever they want, have no boss of any kind, and yet somehow 25 hours/week at this job is at the very edge of toleration.
I mean sure, if playing poker is the absolute nut worst possible thing you can imagine doing even for a moment (if this is the case, maybe try to channel your inner coal miner) then ya I guess it would wear on you. But aside from that, honestly Cushlash I feel like all that's missing is perspective. If a person can work cleaning sewers full time so that his or her family can eat and have heat in their house, then surely there is a way for you to find the perspective needed to play poker in sufficient volume to get you to your 'I don't have to play poker any more' goal.
I realize that old people (me) saying things like 'well I worked 7 jobs 29 hours/day 12 days/week for $.04/hr and I was happy to do it' isn't helpful in any way. But, I think there is an element of that sentiment that is germane to your problem re: feeling burnt out at this volume. My feeling is that if it's important enough to make poker money to facilitate moving on to something else and be financially prepared to do so, then suck it up and get after it. If it isn't important enough, that person should consider quitting now and find something to do that won't devour souls or whatever, and move on.
caveat: I don't really remember with any clarity what it feels like to be single with nobody depending on me, so it is possible that I'm just not able to identify with the idea that playing cards 5 hours a day and as a result earning a living could be intolerable over the short term. I do mean that sincerely...not trying to be a smart-ass. I might not remember it, but I know that it's different