Navel-gazing leads me to my history, and Aiden's recent answer to a question from a young trans girl recalled a few memories. I'm not proposing this as a course of action for anyone, but this is what I did. It's dangerous, and not to be recommended.
Well, I did contemplate and plan for suicide. That carried me through my teen years and twenties, if I'm being completely honest. I planned how I'd like to die (permanently, and in such a way I'd really die and not stay on living, no matter what doctors might want to do - I also didn't want collateral damage to other people, so jumping in front of a train was completely out of the question. I was serious), got all the stuff I needed and was set to go. I got rid of the necessary implements of suicide when I had my legal sex changed to reflect the reality; that is, quite a while ago. But I still remember what it was like.
What I wanted was an exit, an exit no-one could deny me. An exit that was in my control, and no-one else's. At the time I felt (quite reasonably, in my opinion) that I had very little, if any wiggle room in my life to express what I was; I had to keep on play-acting a boy if I was to survive. An exit clause that I could invoke on a moment's notice was what I needed, and it did help me carry on as I knew I could leave whenever I wanted to.
I guess it gave an outlet to my self-hate. I didn't cut (well ok, I did eat in rather a chaotic and self-harming way), I didn't do much risk otherwise. It kept me alive.