Senior citizens?? Important question about organizing and memory?

Hello, I value your opinions on this. I have usually been prett much "with it", now I am doing some transactions that require lots of concentration and organization, mostly paper work. It is stuff I have to do myself, and dont have any one i could ask for help. I have had a lot of life changes and stuff happen lately. All seem to require more paper work. I just look at the pile of papers, cant prioritize as they are ALL equally important and just go blank sometimes. I have missed a couple deadlines already just because I couldnt seem to deal with all the paperwork. It seems like a lack of ability to concentrate. Have any of you had this happen to you? What did you do? Do you think there is any help for it, or have you found anything that in fact does help? Take care and thank you for sharing.