Yes, I know that feeling!
Sometimes those bursts of inspiration fall short to me though ^^" since my friends tell me that's a pretty good story and then in the middle they go like "eh? you got lazy didn't you?" with squinted eyes 
Yep!!!
revision helps me relax too hehe. Especially since you cannot take back what you did in real life. You have no idea how awkward in real life I am too XD One time a friend waved at me and I went for a high five but our hands both missed and we stared at each other blankly then tried to do another high five but then another embarrassing miss then I just said "see ya later." Damn, that was really embarrassing
I guess it's natural for people to be like that i guess? haha 
For me, it's like this:
I get a great idea.
Excitedly, I start work on this idea.
Suddenly, I get another great idea.
Great Idea #1 gets left behind while I work on Great Idea #2.
I get bored with Great Idea #2 and decide to work on Mediocre Idea from my Childhood #9,825.
The process repeats with various other projects and numbers.
I get bored with my own stuff surprisingly easily. XD
I was once told to hand out pieces of paper to strangers. I was so nervous I LITERALLY could not stop stuttering. Everything came out of my mouth like "*in a mumble* U-um, e-excuse me, m-ma'am, I...u-um...y-yeah."
There is no stuttering on the internet unless you type it on purpose. XD