Any time and energy you spend hating and being angry at your ex will ultimately take a toll on you without effecting any positive changes in your ex or your relationship.

Guilt is helpful only when it keeps us acting in line with our beliefs and morals. Otherwise, it creates needless suffering.

When you understand that your feelings are triggered by what you think about an event and not by the event itself, you gain a measure of control. Although you cannot control the things (events) that happen to you, or change your feelings (after all, you feel the way you feel), you can change your thoughts. A change in thoughts often radically alters your feelings.