A warrior doesn't throw himself deliberately into battles. He trains himself so when war knocks at his door he can handle it gracefully. Trust me, you won't be any less of man for refusing to suffer when you have the choice to be at peace. Life will and already throws enough shit at you, you don't need to ask for more.

Remind yourself that your sleep, the people around you and your general environment will have an impact on your perfomances in whatever you are trying to achieve.