Name
A name is a label used to identify a person, place, or thing. It can be given to you by someone else or one you've chosen for yourself.

In the case of people, your name is one of the most important things your have both in terms of reputation and how you feel about yourself. Having a name you loathe can have very negative effects on your self-esteem, health, and success in this world; and likewise having a name you love has positive effects. If you are going though life with a name you can’t stand, you should change it to something you like. The bottom line is, it’s your name and you have to live with it, other people don’t. 
Ruth didn't like her name so she changed it to Alex.