When a colleague or a Client asks you to do a task verbally, what method do you have for remembering to do it? I think the best solution is to send yourself an email CC'ing the person that asked you to do the task saying "
As per our conversation..." This way both of you know that the job needs to be done. Writing yourself a "Post-It Note" has never worked for me. This is really important especially when you are working for clients so there is a record of the requests for work.