I can say now that the best way to get over depression and suicidal thoughts, it's not by ignoring it (that's worse) or dwelling on it (bad) but by accepting it and moving on from it. And that's the hardest part is coming to terms to Depression and moving from it, I can't explain how you do that but you have to come terms with who you are, but in my own experience without that you are stuck in a binge versus purge cycle, and sometimes you can't break that cycle.
What I mean by a binge versus purge cycle, is that at certain points you start binge spree of negative thoughts or whatever, and you eventually purge it away. It almost sounds like a Bipolarism now that I think of it, but it's over a much longer time and has more significant implications than that. You are either trying to rid yourself of the dark thoughts with yourself or your delving fully in the dark thoughts of depression and suicide.
On the topic of suicide, it's been discussed whether or not it's the cowardly way out or if it's easy. I think those that commit suicide are neither foolish or cowardly, neither smart or dumb, it's not sad it's just how it is. In my own person experience suicide is not easy, in the 28 times I have tried to commit suicide starting when I was ten, I have never over-ride my basic survival instincts thus I still live here.
But unfornuately for myself depression, even after I have accepted myself and moved on it creeps back like a long lost puppy, biting at your ankles for you to indulge it, to jump in the dark maelstrom and loose yourself in chaos. Maybe that won't happen, maybe it will.
I guess what I'm saying, I understand where your coming from and from my experience, the pain doesn't go away it just hibernates and sprouts time to time.