I wish Mom and Dad didn't argue so much.

This does not mean, however, that entirely new characters evolved each time the environment changed and placed new adaptive demands on the human organism—this would be extremely imparsimonious and inefficient.

I am only a backup player.

This is not an exercise in self-actualization at other people's expense. That's what you've been doing up until now. This is about acknowledging your faults to the people you've hurt without hurting them more.