This is the painful part. The book encourages you to look at your relationships and ask: Who is taking more than they are giving? If you remove your labor, money, or emotional support from a relationship, would that relationship still exist? If the answer is no, you aren't in a relationship; you are in a donation system.
5 Signs of a Selfish Person: How to Deal with Them - Psych Central
Not the mean kind. Not the greedy kind. The kind that watches a movie alone because you need to laugh. The kind that says "I can’t, I have plans" when the plan is just resting. The kind that blocks your ex’s number not out of spite, but out of a deep, unwavering commitment to your own peace.