Life's too short to make myself unhappy for others

Sometimes, I think teenagers have the right idea. Their self-centeredness and selfishness. Why should I suffer for the sake of others? It's selfishness I guess, but it's also self-preservation. If I know I will be unhappy, I shouldn't agree for the sake of agreeing. Why should I force myself to do something I know I'll feel resentful about and then complain about it?

Okies! Decided. Life's too short to make myself unhappy deliberately.