I was born in 1996. I 17 years old. My birthday is February 21st in the lunar calendar. I wonder if I change my name, will it affect my future? ...

Change your name … generally speaking, this kind of thing is taken by your family before you are born or just born! Therefore, personally, I think it is better not to change. After all, the name is just a title! I don't think your family will say anything about you, but it will be a little uncomfortable. They may think that you despise their wisdom!