Use Trello (or something like it) to track your TODOs, in small manageable chunks as others have said.
Have one column just to track what you are actively working on at the moment. (Put only one or maybe two items in it. No more!) When you get distracted, now you can immediately remember what you were (supposed to be) working on.
Have a few other columns to sort items by priority. Now you don't need to remember what other things need doing.
Have one column to track stuff that you're waiting on something external.
And importantly, don't delete stuff that's done. Put all those things in their own column. It feels good to move things there, and see the progress you've made.
Comments
Use Trello (or something like it) to track your TODOs, in small manageable chunks as others have said.
Have one column just to track what you are actively working on at the moment. (Put only one or maybe two items in it. No more!) When you get distracted, now you can immediately remember what you were (supposed to be) working on.
Have a few other columns to sort items by priority. Now you don't need to remember what other things need doing.
Have one column to track stuff that you're waiting on something external.
And importantly, don't delete stuff that's done. Put all those things in their own column. It feels good to move things there, and see the progress you've made.