Had a chat with my friend, Erin, the other night about friendships having a "purpose". Notably, once having moved on in a friendship, being able to recognize what that friend brought you or what you learned from them? It may seems selfish. to "get something" from a friend. But you do.
Sometimes these friends bring you to other people; important people in your life. Sometimes you learn something about yourself. You learn about others. You learn something about how you are compared to other people. You learn what you love about yourself and you learn what you don't like about yourself. Sometimes you don't figure this out until a friendship is over. And sometimes, because of past friendships, you figure out how to get over more recent-past friendships sooner. Because you realize, sometimes, there are friendships that aren't healthy. Friends you won't know forever. Friends sometimes are around for awhile before you realize their value. Realize, you WILL know them your whole life.
So, what do you get from your friends? Do you become your best around them? Because you should.