A product management mindset from Jason Cohen.

If you do little things first, there’s no time for big things.
If do big things first, then you can fill in the smaller things.

And:

It’s not important that every sprint is perfectly balanced between all types of work. It is important that we’re balanced over a period several months, otherwise something important is getting starved. Indeed, it’s often wise to build imbalanced sprints intentionally, because that means greater focus, less context-switching, and therefore getting more quality work done.