I can't remember any long term memories. I do have hard time remembering short term memory also. If somebody asked what I did a week ago, my reply will be "I don't remember".

Yeah, writing everything down doesn't work with me. I tried and failed. I do not cope with remembering memories at all. I just let it happen. Because for me, past memory doesn't really matter to me. Sometimes, I will have flashbacks and be like "Oh, I remembered". But the bad thing is that I will have a flashbacks and be like "When was this? When did this happen?" and then, I will be trapped to that flashbacks, trying to figure out when/how/where/why/what happen.