Why do I lose things all the time?

Everything. I can't remember where I put things all the time. I know that everyday when I wake up, there's a 50% chance I will lose something and then find it and then probably lose it again. Sometimes I never find things. I lose money, my phone, my keys, cards, important documents, a whole bunch of things. I just space out and put it down and can never find it even if I look forever. I feel really stupid and I don't understand why I keep doing this. I also do stupid things like lock my keys in the car. I'm a really disorganized person, but I don't think me losing things has to do with that. I usually lose them while I'm in my living room or just in stupid places. I just feel really retarded, and none of my friends lose things to the same extent as me. It's like I'm a total scatterbrain or something... how can I fix this? It's starting to develop into a serious problem.