Flashbacks

Don't really know why, I have some serious flashbacks these days. I find myself hard to focus on a lot of things. My mind constantly go drifting around in the past while I should be concentrating on works. Yeah, flashbacks. Like what people see minutes before they die. Keep having images of past swish through my mind like haunting ghosts, constantly, and won't let go. I don't know why. Is it the age? Am I really old enough to start mourning for the pass? Is it the diet? Am I somehow nutrient deficient that I can't concentrate myself when it's needed? Am I going crazy? Is it some psycological problem that I am having that's driving my sanity away? Or maybe I just misses some moments and people in my life? I don't know... but... maybe if I write them down, then they won't keep popping to my head. Let's see how it works. And if it doesn't work... Maybe I should go see a shrink.