One's Greatest Enemy Is Himself

Indeed so. I've made blunders which cost me dearly. No one else made them for me. No one else caused them directly or indirectly. To plan my moves so merticulously and then make a wrong move that could cause me my whole chess game, only this is real. I am filled with dread. I should hate myself for messing things up for myself but the right hand does not slap the left hand. Both hands belong to one. I've loved myself so much and now, I should hate myself. One's greatest enemy is himself.