Knowing what you want to accomplish should help you determine which tasks are most relevant. This will take time and discipline. You need to stop hiding from discomfort and do the hard work. Which tasks matter most? Find out, and act on those. In doing so, you should see greater progress than you did when you were busy doing everything.
Source: Slow the fuck down
Counterpoint: When you’re just starting out, chances are you don’t know what you want to accomplish.
You gotta try different things until you hit that sweet spot of what you’re good at, what you enjoy, and what other people find valuable enough to pay you for.