When you have a list of things to do in a day, you will feel overwhelmed if you see them as a series of things you need to get done.
Instead, focus on the one thing. Get it done with laser focus and full intensity.
When it’s done, move on to the next things. If you have done all the things on your list, good. If not then try to become efficient the next day.
Or remove some things, delegate then or modify the intensity. So do one thing at a time and then move to the next one.
While you are at it, the best way to complete all your task on list is not do random stuff until all your list task is done.