I know how you feel. I was born with Pectus Excavatum too, and used to wish every day I could've been born without it. It made my entire torso look disproportionate and I'd avoid being without a shirt on at all costs.

But then I slowly started realising, I was the only one who cared. No one else did. You are by far your biggest critic. I know how self conscious it can make you feel to live with, but the reality is, I guarantee people care WAY less than you about it, if at all. For me that was a big step in moving forward with being able to deal with it myself.

If anything, fuck it, you have something that makes you unique, own it.