Do a Favor and Don't Ask for, or Expect, One in Return
"This is a strategy that can help you practice integrating service into your life. It will show you how easy it is and how good it feels to do something nice for someone without expecting anything in return".
"So often, either consciously or unconsciously, we want something from others, especially when we have done something for them -- "I cleaned the bathroom, she should clean the kitchen". Or, "I took care of her child last week, she should offer this week". It's almost as though we keep score of our own good deeds rather than remembering that giving is its own reward".