Well basically what you describe is a mental leak and people who have this are the ones who wont achieve so what you say is counter-intuitive in a way, so what i am saying is, nor the depressed nor the ones who get mentally ill in any kind of way because of Poker will ever achieve something at Poker, like in any other business right? who can succeed being depressed and unhappy at what he does? A poker player must not get obsessed and addicted to his grinding, must not stop socializing, must not follow an unhealthy lifestyle(alcohol ,drugs for focus and energy etc), must not start believing that he is defined by poker and still look to do more stuff like education other business investments anythign he is interested at etc. Get enough sleep and excercise regularly. Your discipline is destroyed when you are the absolute master of yourself, you can fall for these bad habbits very easily, when your discipline is ordered by outside factors and not yourself it is way more easier, thing about when you were at school, it was so normal to wake up and go there every single day, or do your homework, i know so many people that when they go to college they completely change and become underachievers from good students and it is just because of that.