I don't think that everyone should necessarily be a doer. Instead, I believe that doers and thinkers can complement each other well. When it comes to socializing, I am a thinker while my husband is a doer -- when it comes to careers and life goals, the opposite is true. We both push each other to constantly expand our horizons. If we were doers in both areas of our lives, I believe we would have a lot of conflict as to how things should get done!