I don't know (about) what to write

I've wanted to write about something, but I don't know about of what, so I have decided to write about this.

What is the reason for that I can't write about of anything?

Well . . . maybe, my limited vocabulary; maybe I'm scarred (but just a little) to make mistakes and to not being able to express /my ideas clearly enough/myself clearly enough. But I want to improve my English. I do understand that I need to practice more and more, so I keep telling me myself, myself, to write and talk as much as you can.

Well, this is my attempt.

I don't know what write

I've wanted to write about something, but I don't know what to write about about of what, so I have decided to write about this.

What is the reason for that I can't write about of anything?

Well maybe it is my limited vocabulary, maybe I am a bit afraid a bit fear (but just a little) to make mistakes and don't express with clarity what that I want to say. But I want to improve my English, so I understand that I need to practice more and more and I tell me myself, myself, to write and talk to as many people as I can.

Well this is a new intention to do this.

I don't know what to write

I've wanted to write about something, but I don't know what, so I have decided to write about this.

What is the reason why I can't write about anything?

Well maybe my limited vocabulary, maybe I am a bit afraid (but just a little) to make mistakes and I don't express with clarity what I want to say. But I want to improve my English, so I understand that I need to practice more and more and I tell myself write, talk, as much as you can.

Well this is a new reason for this.