I guess that there is always a gap between our thoughts and our skills to write and express ourselves. We always end up writing less than what we think!

but, it's writing. Not math.

That statement amuses me. I know that is a figure of speech and I get what you are saying. But, that works with everything. For instance, it's Rocket Science, not math. It doesn't make sense to say it in that way. But, the sentence remains true. Because, when you put (something that is not math), you can just write after it, it is not math. LOL

Jokes aside, I agree with being authentic. Everyone can write. But, not all have found their voice. The thing with reading, is that it gives you a shortcut. Instead of trying to write more and more to enhance your writing, you can spend some time reading which will automatically help in enhancing the way you write.