Earlier in my career I went on all sorts of productivity boosting courses and read loads of books...in the end only one thing has stuck and that's the 2 minute rule from David Allen.
In short, if a tasks hits you and you can get it done in 2mins or less just do it there and then.
Explained in his voice here for those interested - https://www.youtube.com/watch?v=5_-YOdwUDsg&t=37s
When I actually got out a watch and timed it, I was like "oh shit, that was not even a fraction of my estimate".
So it's the estimation, not the actual task length/difficulty that is sometimes a problem for me.
However, after spending 2 hours doing that, I went and did a bunch of stuff I’d been procrastinating doing that were high priority with seemingly way more energy and focus.
Yes if I am working on a high importance, high bandwidth problem I will break it.
But of day-to-day with team a lot of things fall into this. I see other stick it in their To-dos or setup time in calendar where I just prefer to get it done.