I'm Considering Killing Myself. I Ruined My Life, and I Want To Die?

I'm 22 years old. When I was in middle school I developed a habit of pushing on my nose to try to make it smaller. I did this for years, not even realizing that I could be damaging it. Now I have breathing problems 24/7. My nose is collpased on the inside. I don't want surgery, I realize. I also don't want to spend the rest of my life with breathing problems. This haunts me day in, day out. I'm gaining weight and I'm really sad everyday. Life was hard enough when I could breathe like a normal person. Should I kill myself?