There is definitely something disordered in your thoughts. I think it would be best to go see a professional as we on the boards can't diagnose you. But get help before this progresses. If you let that voice in your head keep telling you what to do, you'll be going down a very dark path for a very long time. I'm about your age (I'm 22), and I first started skipping meals in 7th grade (so around 13). Things only progressed and got worse from there until this year when I was eating max of 1 meal a day and finally said "Ok Ed, I'm tired of you, I want you out" and came out of denial and asked for help. Don't wait as long as I did. You don't want to torture yourself or harm yourself.