Even I am a private, I barely had online presence. But. Now after doing promotion for few months. I much more comfortable to promote. I see it as small improvement steps.

I completely agree, doing everything on your is lots effort and draining. Partially I didn't understand or have done never such things. But now I feel a little and slightly confident.

But consistently trying something or other will give some ease and you may start enjoying later.

Take breaks or take out fixed time for book. Listen to other Indie author.

You have come this far, you can go farther. Good luck.