Today's Indie / self-published author must be writer, author, marketer, publisher and more. Sometimes you have to separate the functions and stick to only one for awhile.
Writing is most important.
If you don't have stories and books you don't have anything to fill the other areas.
When you feel overwhelmed - it's best to let folks know that you're knocking off a few of the functions for a short period of time. IT IS OKAY TO HIDE AWAY AND WRITE. (As long as you remember to return.)
I'll be back!
with - Home From the Grave
Meanwhile - check these blogs from the past.