cutting is a bitch, there are so many threads on here in regards to self harm and cutting, your photo is heartbreaking but I understand, I do not have as many scars on my lower arms, and many are faded over the years, but more recent ones were I took back up cutting are showing.
I tend now to harm my thighs, it doesn't bruise any more, but it helps, I am not promoting self harm by the way, I am giving you my experience and what I go through.
Destructive behaviour at the end of the day is a bad place to be in, resorting to this as we feel nothing else can help. I know many would say find a hobby, find a distraction, but sometimes you need to feel something physical to enable to release what we are feeling inside. its a hard place to be in for sure