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I find gambling stressful and depressing.

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You need to stop gambling ASAP. This statement is a bad sign.


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I thought about exercising although I'm not very athletic. I think that might make a huge difference.


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Excercising is hands down the best stress reliever. Ignoring excercise is IMO a recipe for mental strain. Unfortunately excercising regularly requires a LOT of discipline especially while attending school. (Are you going to college/Uni or are you in high school?) I excercise on and off and it never ceases to amaze me how much better I feel and how much better my mental state is during periods which I am excercising regularly. I can safely say I play poker significantly better when I am excercising regularly.

Good luck. Don't be afraid to ask friends/family for help.