As an INFJ how can I make the best decision?

For years I have struggled with decision making. So often I've found myself doing things that I don't want to do and wondering why I'm doing it. After many "wrong for me" decisions, I end up over stressed and totally exhausted. Dazed, I just sit there wondering what happened.

As an INFJ (Introverted Intuitive Feeling Judging) person, I live by my principles and values. They form the core of my being. One thing I value is having unity between people. I seem to get in trouble when I make decisions based only on trying to keep harmony between people. This is a great goal, but for an idealist who wants to improve the world, it doesn't work. Improving requires change. Living by principles often leaves me standing alone. Sometimes I am seen as "not a team player" and, sometimes, as being impractical. People tell me that I have to accept things as they are and just "live in the moment", but how can I settle merely for the status quo when I have the ability to foresee possibilities? I simply can't. It would mean giving up what energizes me. It would mean giving up my purpose in life. I truly desire to gently help each person become their best; to develop their talents and to have the greatest happiness possible. I believe in people's potential.