Fear of overwhelming upvoters with too many choices.

I think you might actually reach more audience, posting more times a day. Maybe if you keep format that you have already, and just make additional post documenting what you are doing could be a nice way to go.

Fear of being seen as greedy for making so many posts.

Not a feeling you should have, you really don't need to give a penny what people think of you, if you are staying true to yourself.

Fear of not being able to make more posts daily.

Don't make those posts, if you do that I think you are likely to fail to produce more quality content. Document what you are already doing and share that with your audience. You have someone helping you with editing and scripting already, no?

Fear of feeling like one post per day is not enough.

Do what you feel like, not what you fear of.

Using 2% of my voting power on every post means less to upvote others and earn via curation.

Can't comment on this one, am not familiar with steemit that well. But looks like you are doing good job already :)

Laziness in finally just installing eSteem after hearing about it for a month.

Be lazy, and get less steem and attention.

Fear of making posts with small earnings.

I don't know if there is something in steem that could affect your earnings if you post more, but I feel you would earn more per day when you subtract all of your "small" posts.

Fear of doing anything different when things are going so well!

If you are happy the way things are right now, then don't do it! But also you cannot expect to do any better than you are.
Also, what is the worst thing that can happen, you try that for few days and go back to a way you did it before...

But I think you know already all of the things I listed above.

I personally post when I feel like and have something to share, but you are making your living of it and therefor it should be different for you.
Authors that I favor are people that try to stay genuine, and provide decent content.
That said, I don't follow you regularly (or anyone else).

I hope that you find this feedback useful, and thank you for sharing nice information's with people on steem.

Best,