Rarely when we get our monies in, are we a 100% (or even a 90%) favorite to win. This provides our opponents with many opportunities to suck out on us.

It also accounts for 95% of poker-related mental-illnesses.

The more you grind, the more bad beats you see, and the less they sting when you get them. They are simply an inevitable part of this game that you've just got to accept. Some days you'll see more than your fair share, and some days you'll see less. Try not to go crazy on the former, and try not to get cocky on the latter.