1. Free your heart from hatred.
2. Free your mind from worries.
3. Live simply.
4. Give more.
5. Expect less.
Christianity, Judaism, and Buddhism - the only religions I know anything about - all tell us to forgive others. I have been struggling with this "forgive everyone everything". The first step is not too hard, the step where I wish nothing bad befall another. Its those following steps that are difficult for actions which I view as "unforgivable". I will keep working at it, though, because until I forgive others I can not forgive myself and be truly happy.
What we think, we become.
All that we are arises with our thoughts.
With our thoughts, we make the world.
- The Buddha
Link to a blog on forgiving ones self.