When I try to learn stuff, I sometimes get good results from the opposite approach: instead of doing the hardest thing, do the easiest thing that counts as progress. In other words, instead of grabbing the highest rung I can reach, I grab the rung I can reach comfortably. Then I take my time to absolutely conquer that rung with perfect technique and control, doing many many repetitions. Then move on to the next.

Advantages of this approach: it's easier, less jerky and more methodical, I can spare attention for ironing out any mistakes in the basics... And most importantly, it feels like I have more "momentum". When my workouts or training sessions look like this, random events are much less likely to derail my schedule of leveling up.