I have played a bit of time in poker and I just haven't really figured out how to deal with emotions a.k.a. tilt. The money has to be taken out of the equation and that is bankroll management but bankroll management isn't the same for every poker player.
Variance in poker is one in which is how we react to that variance and managing bankroll is how much we need to pay for our reaction to variance. So for some, it's not that big a deal for you to lose the entire "bankroll" on a site or a poker and they just redepo but for some, it could be 100 buyins before they don't get upset when they lose a buyin in a 1/2nl live game.
For me, I have been working on this. I have a couple of things I am working on. Being properly rolled for the games I play. To the outsider looking at me, I don't tilt but internally, I tilt. I don't break anything but I do get upset at losses. So with this information, I look at one of three things. (1) am I too high of a game that is warranting me to be upset or is it that I am not "paying for variance" of the game. (2) Am I just not disciplined enough with my emotions that I am not putting it into account. (3) I just am not any good at poker.
I hope that I am not number 3. I want to say it's a combination of 1 and 2. I can work on mindset of poker so I can lower my tilty ways or lower into stakes that I am comfortable losing.
The biggest thing in poker, we can play the most perfect poker but with the information that we have, we can make our perfect decisions but still lose and we have to be ok with it.