Is it worth it?

I've been dealing with this for years, I have one of those you see on the subreddit which is the worst it can get. I've tried healing my lips for year. During lockdown I tried so so hard, and didn't even eat food or brush my teeth just to keep my lips safe. Fast forward to now I'm in contact with a dermatologist and psychologist to try and help me, yet nothing works. Even the slight touch of a straw or putting vasaline on can ruin weeks of work. I see all these people on here being able to finally get rid of something thats plagued people like us for a life time, but for me, I just don't know how much longer I can go before giving up on the healing completely. Any advice would help, I'm at my end here...