Do you need to hide active self harm addiction if you are an adult?

Hi, I am an adult who is considering getting back to therapy because of my addiction to self harm. I started as a teen and it got bad before I was eighteen so I never talked to a therapist about it openly out of fear of hospitalization, which I somewhat regret due to how its gotten. However, none of my injuries have ever been close to dangerous in that I do not cut deep enough nor do I cut on areas that could invoke fatal injury. I do have a history of suicidal ideation and occasionally get those thoughts, but that is entirely separate from my self injury.

I would like to actually be open with a professional and not feel the need to skirt around the subject as I have in the past; Previous therapists have known but I always brushed it off as insignificant out of fear of repercussion. Truthfully, hiding it is not helping and I think I need to be able to discuss it openly.

I don't know how this works for adults. I would not benefit from forced hospitalization. I am in college and am both too broke and too busy for that. If I felt I was an immediate danger to myself (as in death), I would go to a hospital as I have in the past.

I have read other people's responses on the subject but often see things like "as long as you aren't in immediate danger", which I do not know the implications of. Does "immediate danger" mean suicide/death? Or would an active addiction to self harm constitute as well?

Thank you.