One of the biggest issues I find in playing micro stakes poker is what is often referred to as 'Entitlement Tilt'.
If you have never heard of this before, I can guarantee you know the feeling. The very fact you are reading this blog suggests that you put some sort of time and effort to improving your game. Well entitlement tilt, is that feeling you get when you lose a big hand to a fish who you know is a much worse player than you.
You think that because you are better than him/her that you are entitled to take down the pot. Unfortunately poker doesn't work that way. Luck plays it's part, and no matter how good you are, no matter what the odds are for you to win the hand before the river is dealt, you are going to lose some big hands from time to time.
In order to deal with this form of tilt you need to accept the fact that this will happen at times, and be happy that you get to play against players who are worse than you. You know in the long run you will win much more than you lose, so you need to acknowledge that fact at the time, take a deep breath, and understand that is the attraction of poker for these fish. They love that feeling, and that is what keeps them in the game.
Fortunately for me, my wife is a counsellor, and so over the years I have become slightly more philosophical in my outlook. I know that just because I might be better than someone does not entitle me to win every hand.
Remember that, and you will be a better player for it.