Like Dee said, lists, manageable ones, are a great idea.
Businesses talk about "managing expectations" like no one is going to open a burger shop and expect to be challenging McD's for the top spot in a year.
So make a list then just make a start on whatever you want to do, then keep at it in however much you can manage each day. Momentum will build. Tick em off day by day, week by week.
This is the essence of taking things "one day at a time"