I blame depression. I really, really do blame depression.
I've found a really simple answer to a lot of problems that a poor memory brings about.
That's it. A notebook.
I have one here at my computer desk. I have one at work.
The one at home I write down things I need to do - usually to do with transferring money, paying bills, anything mowing related.
The one at the Lab I record all phone calls I take in. All messages I have to pass on. Things that I need to remember to do. If I don't, I forget. I have forgotten before. At work that's not a good thing.
Try it - you might like it!