Frightened by my own inadequacies

Slowly over the past few months, I have written a narrative play titled SLEEPER. It wasn't as immediate as other projects, and so I picked it up and laid it down often, adding to it in random moments.

I finished it a week ago and laid it aside to let it gain a little distance. The manuscript sits in a neat pile, every day reminding me of its existence. I should read it now, and get to working on rewrites. Of course there will be rewrites and rewrites are always an improvement, but I am frightened of picking it up and reading what I have got on paper the first time around and discovering that it's no good.

I'm mostly a humorist. I usually write light, funny stuff. SLEEPER is not funny. Not only is it not funny, but I intended it to have an emotional build to a highly dramatic climax. Will my attempt to write something serious and dramatic proves to be inadequate? What if there isn't so much as a kernel of what I want it to be? Nothing there that even several rewrites could fix?

It sits there looking at me. I wonder if it's got any potential? I wonder when I'll get around to reading it.