Get a FPS game where everyone is even and only true skill determines whether you win or lose ... not how many hours you've mashed your fingers bloody on a keyboard grinding for days to get those boots +2 of buttkicking.
Something like counter strike or call of duty.
That way you'll actually get yourself sleep and not find that you've wasted years of your life in a game that treats gameplay like you're an employee -- assigning you tasks to complete and instead of them paying you, you're paying them.
PS: I spent years playing online games, but I made money in them farming online gold and selling it to others, so i actually was paid to play