Go-Giver is a nice little book which revolves around these 5 principles
1) The Law of Value: Your true worth is determined by how much more you give in value than you take in payment.
2) The Law of Compensation: Your income is determined by how many people you serve and how well you serve them.
3) The Law of Influence: Your influence is determined by how abundantly you place other people’s interests first.
4) The Law of Authenticity: The most valuable gift you have to offer is yourself.
5) The Law of Receptivity: The key to effective giving is to stay open to receiving.