My apologies Anthony, it has taken this long for me to realize you meant you identified with the character in the film, not saw the film and were triggered.
But I came back to the thread because something has been occurring to me. I know the CBT is required- correctly so, and in the process of doing it one realizes (at least I do) that there are multiple feelings there, and they do change. Like a book I read, "How to Stay Alive While My Mind Was Trying to Kill Me". I also recognize the presence of depression, and realize or agree there can be unconscious impulses to do one's self in. And there can be dissociation.
But maybe, it can be something else, related but different? For example, sometimes I 'need' to walk. I don't mean in an exercise kind of way, I mean I have to take off and walk for miles, down highways, in the dark, or in the middle of the night. I thought it released adrenaline, I can think more clearly or bear things. But now I think, it occurs when I am trying to create the feeling of 'no constraints', I mean I'm literally doing it to convince some part of me that there are no constraints. To 'feel' what life feels like with no constraints, or less. To 'feel' like I'm living a life without constraints, especially the constraints of ptsd. Perhaps the 'draw' (even unconsciously), as to water, is similar? Simply the 'feeling' of potential pain reduction, or the like (in one's mind). Not necessarily the obvious end result (the end of one's life).
Like running, or skydiving- not for the high, not to be brave, and despite risks, because instead for the feeling of freedom.
Then logically, if we can figure out the feeling or state we need we can choose hopefully healthier things that will bring it.