I?ve written about this previously in my blog here: http://www.stevepavlina.com/blog/2005/07/how-selfish-are-you/ Certain individuals have a tendency to favor either STS or STO, but if you favor one side at the cost of the other, your life becomes unbalanced. If you base your life around genuine service to the highest good of all, then serving your own self interest also serves the highest good. If you devote your life to serving to the highest good of all, then enjoying abundance in your own life will become an equally honorable pursuit. 10.