If you're going through friendship issues, I would say, first of all take a step back. How important is the friendship to you? Sometimes, if someone's not being a good friend to you and isn't treating you the way you should be treated, then you kind of have to move on sometimes.

This quote is saying that if you are going through a difficult time with a friend, you should think about how important this friendship is to you. If the person is not being a good friend to you (for example, by not treating you with respect or kindness), it might be best to end the friendship.