I find it helpful to write an ordered list of my to-dos on a piece of paper. Then I plot them on a chart below - usually I do effort for the x axis and urgency

I find it helpful to write an ordered list of my to-dos on a piece of paper. Then I plot them on a chart below - usually I do effort for the x axis and urgency for the y axis. Then I chart a path for myself by drawing arrows from one item to the next. I start with the easiest things so that I can knock off the low-hanging fruit and gain momentum. I find it helpful to decide what order to do everything ahead of time, because then in the moment when I don't know what to do, I just look at the chart and get a clear answer. The graphing process also helps me evaluate my to-dos more rationally instead of going off of vague feelings. Often I find that a task that feels really difficult actually won't take very much time. That helps me buckle down and do it, since I know I can get it over with quickly. Making the graph also helps me let go of things that aren't actually important or urgent. I can put them at the tail end of my path and not worry about whether I'm able to get to them or not. It helps me stay disciplined and not fill up my time with them just because they feel easier than the important stuff.