1) Is there any possibility of me overcoming my sports betting addiction and being able to play poker in a controlled and responsible way? Or is this just simply playing with fire?
Yes, frankly speaking even if it doesn't look like that, sports betting is very different from poker. You just can't manage players/teams you bet on. Try to meditate and improve your spiritual and emotional IQ - without joking. It'll help you a lot, you have to know why you're playing and repeat this again and again 50 times a day. F*** sports betting, it's gambling. If you bet and win- you are a gambler with such luck. If you play poker and win - you are a good player (of course luck, ev etc..but you know what I mean) and I always wanted to be a good player, not a lucky gambler
good luck buddy!