if the shoe fits, wear it

If the shoe fits, wear it is a figure of speech which insists that if a certain description indeed applies to you, then you should learn to accept it. This can be true with any type of description ranging from your personal appearance to your talents or skills, attitude and behavioral patterns. The phrase means that sometimes you are given a certain label or told you are a certain way and dont like it; but if its true you should just accept it and move on.