https://marco.org/2008/08/14/if-youve-got-a-list-of-20-things-you-should-be
If you’ve got a list of 20 things you should be doing, pick the most important one or two and then just let go of the rest. You will never upload your music to every one of these sites. You will never contact every person. You will never enter every contest. Just take the one or two things that would make the biggest difference in your career, do those one or two, then stop. Turn your attention to the next one or two most important.