Still can’t get it all done – Time Work

I want to improve my relationship with and beliefs about time. I often have days that I believe are extremly efficient. Yesterday was a great example. As I did my homework today about yesterday, I loved nearly everything about the day. The one exception of what didn’t go well, which was the same the day before, is that I wanted to get more done than I did and believe I am behind in some areas with things that are important to me. I have prioritized my sleep about completing these other things. Short of missing sleep or being ok with not keeping commitments, or calling in sick at work, I have not figured out how to get it all done. I often underestimate how long tasks will take. I don’t like feeling frustrated and stressed and want to believe that there is plenty of time. But it sincerly doesn’t feel true to me. What should I do next?