I have been living off gambling for 6-7 years now, almost all from poker but I'm starting to switch to sports betting, my passion for poker has gone down and my sports betting passion has gone way up the last few years. It probably is one of the professions that takes the most self discipline out there and it took me 3-4 years to really control my urges. You have to steadily educate and control yourself. This is probably the most frustrating job a guy can have but it can be quite fulfilling at the same time as you get rewarded by +EV plays in the long run.