To do lists are weak. Even with the highest prioritization with cutting everything that does not work well enough. If you would add a when and how long element there, then that would start to work.
However, to our surprise there is already a thing for this and it is called the calendar. There you’ve this day and all the time you’ve during this day. Then you’ve the tasks that you can do today. That’s it, that’s all there is. Everything else remains to be undone.
When you do it does make the difference. There is only so limited time for us. If you cannot decide this, then you are not really serious about it.
Routine helps even with the calendar. Allocating enough focused work time and recovery routines makes all the difference. When your plan becomes your habit, you know you are far, just keep on repeating the system.