Hi Rose,
Thank you for your comment. You are right that self-harm and suicide are not the same thing, but I understand why you would be drawn to this post (and to asking about your dream here), and I will do my best to offer a helpful response.
So it sounds like, in your dream, you had an out-of-body experience where you saw your own body. I can imagine that must have been jarring, especially given the apparent nature of your death in the dream. I'm not a licensed therapist or dream analyst, so this is just my opinion, but I do think that it's pretty significant that you have a history of self-harm and have dreamed about suicide before.
However, keep in mind that having this dream doesn't mean this is what will happen. It doesn't even necessarily mean that it's what you want to happen. Rather, it seems like it might reflect some latent (or maybe not so latent) worries you may be carrying with you about your past--as well as your future. As a self-harmer, it's natural to be worried about relapse, and/or about the situation getting worse (if you are still actively hurting yourself).
If you want to understand your dream better--and especially if you are worried that you may start self-harming again or that the situation may escalate--please try and talk to a therapist or counselor about it, ideally one with expertise in dream analysis. If that's not an option you can or want to pursue at this time, however, I would suggest journaling or other writing exercises. Sometimes just writing a thing down can help you get a better grasp of it, and take away some of its power over you.
If you'd be willing to seek out a support group or call a hotline as well, here are some resources to check out:
https://www.healthyplace.com/other-info/resources/mental-health-hotline-numbers-and-refer…
I hope that helps. Please feel free to reply or comment again if you have further questions or concerns. In any case, I hope you can rest easier--and sleep better--soon.
Sincerely,
Kim