Gata, I also wanted to say that I made a post about this in SS a couple of weeks ago:
Stuck to the Grind.
In short, if you're experiencing emotional fatigue, sadness, self-doubt or anger when you play, you're doing something wrong. If you're a casual player, you need to reevaluate why, when and how you play. If you're playing for needed money, you need to evaluate if you're really cut out for the grind.