I'd say that for me, while facing and coming to terms to what was done to me was very difficult, the biggest challenge is the fallout - dealing with the results of the trauma.
The results show up, of course, as the list of symptoms, but for myself the ones that pose the greatest challenge are the inability to inhabit my own skin/life and being extremely fragmented. They're closeley related symptoms, actually.
My natural state of being is at least 'one step removed' from the present; this survival mechanism is pervasive and resistant to change.
The sense of being fragmented and compartmentalized is also a huge challenge for me. I view having personality 'parts' as a continuum and, though I am not a MPD/DID sufferer, the fragmentation & compartmentalization is such that it causes my life to be piecemeal and...well...fragmented. Only certain parts of me show up at any given time; rarely is 'all of me' here. If only 'parts' of me show up, I don't have a robust experience of life and....it all goes gray.
I therefore lack the inner sense of direction that "normal" people have. When they make decisions that will secure a happy future (school, career, relationships), they get that inner hit of serotonin, that tells them they're headed in the right direction. I never had that (I do sometimes now) so, even though my intellect, my executive function, could definitely agree with society that certain behaviors and paths were good, I had no resonating response from within and ended up with a sense of "nothing means anything". This has crippled my life such that I was unable to pursue hopes, goals, and dreams not only because I didn't really have any, but because there was no inner response to working toward anything. It made my life, my accomplishments, my very experience of life, only a shadow of what it might have been. Most of my work is focused on inhabiting my body, my life.
Don't know if that makes sense....
-Dylan