Constantly. I couldn't remember anything without them. Well, I could remember to wake up and get dressed in the morning, but that's about it.
I have three separate lists going right now. One is short term (what I have to do today), one is longer term (this week and next week, like paying bills and going shopping) and one is big projects I have to accomplish, like get a light fixture replaced. I wouldn't get anything done on time without these to help me compensate for my memory issues.
Me too I have three lists and the same topics on them.