Live enough days on this planet and you're going to face some big stuff and plenty of little annoyances. There are bound to be whole days where things don't seem to go your way. What are you going to do with that?
The moment you accept responsibility for your reactions to anything that is happening around you, you have no way back. The moment you recognize that you are the one choosing your reactions, the blame and complain game ceases to have power over you.