Long time lurker here and thought I needed to create an account and finally start posting. Hello fellow sufferers.
I'm 28 years old and had constant DP since 13, started by extreme anxiety, stress and trauma. Weed panic attacks aggravated it.
While I'm not recovered yet, I have a story to contribute that has to do with recovery.
7 Years ago I had a time (few months), where I would sometimes reconnect with reality, thoughts would come back and I had a more relaxed feeling. It was at a time when I was meditating/grounding every evening for 1-2 hours and going to speech therapy. During the meditation I sometimes felt like a barrier broke down and a rush of thoughts and emotions went down my head. It was quite overwhelming, but i enjoyed it since I used to have a complete blank mind.
The DP wasn't completely gone by that time, but it was way better than usual, I had a more relaxed sleep and I'm sure if my life would have continued that way, DP would have lifted more and more and finally left.
Unfortunately some stressful changes brought DP to baseline again.
I also read about different people having it up to 20 years that were able to recover.