I'm 16 and a half and want a job

I'm turning 17 in 2 months and when school starts again I want to get a job. The thing is I'm really shy and I think I have social anxiety or something but I get so nervous and sweaty around people, what can I do to start off? My boyfriends mom is always talking about my future and when I'm going to get a job, but I can't picture myself working because of my social anxiety help!!