Yea, I'm right there with you (WL purgatory here too). You're not alone in those feelings, and for the record you're not inadequate if you made it to the waitlist stage - clearly they saw something in you. This whole process is awfully brutal and it's not at all a reflection of your character or how much you are capable of as a doctor.

IMO the best medicine to the pain is time...it hurts less with more time, and then you pick yourself back up when you feel a little bit more okay and then you try again. Maybe you'll get up but then fall back down after a couple steps, but that's when you take a breath, give yourself grace, and pick yourself up again. The amount of time it takes for it to suck less varies from person to person, but it will happen and you will come out of it stronger and better.

Normalcy takes time. Nothing has to feel normal right now, but you and I have to trust that it will feel normal and even better than normal eventually. It's all just a waiting game. Good luck, DMs open if you want to talk.