[header] How to know if you are being selfish [title] Analyze what others say about your behavior. [step] If you're always thinking about what other people can do for you, you might be selfish. This is especially true if you don't go out of your way to return those favors later. 
Healthy relationships have an equal (or nearly equal) balance of give and take. [substeps] For instance, if you frequently ask for people to loan you money or cover your shifts at work, but you don't do those things in return, you might be selfish.