Every day, while drinking her coffee, my wife jots down everything she needs to do that day in a notepad. Regardless if the task is big or small, important or just for fun, she writes it down. As the day goes by she ticks off things she gets done but with no pressure to complete everything.
The next morning she will take anything she didn't finish and put it into a new list for that day.
It's such a simple but effective way to take everything you are worried about out of your head so you can focus on one thing at a time.
I asked her if she would like it as a web app to help automate the process and Daysie was born!