Uni Girl - It's the simple things in life... Play writing

Recently, I had my 19th birthday. As fun and as exciting as it was, I believe the thing I got most excited over was having my trusted friend and editor returning a script that I had written, completely covered with red pen. Why I am so happy? This isn't my first draft, nor second, nor third. It is my seventh. And the play is one I've been working on for now... 3 years? And even though I have written about 8 plays, I keep coming back to this one... I affectionately call it my baby. After all, I've seen it grow from a 33 000 word play that would be impossible to stage unless I was Robert LePage; to a very do-able play of just 11 500 words. So, still a nice full length play of about an hour and 45 minutes. Just tightening and polishing it up now. But yes, who else finds editing plays just as riverting as me? Perhaps I need help... jumping up and down at the sight of an edited script rather than a bottle of "hootch" is not something an average 19 year old would do. *scratches head* For that matter, just wondering for all the emerging (and not-so-emerging) playwrights out there, how many drafts have you done on your plays? And I'm not talking fixing a line here and there, I'm talking basically either changing scenes or starting again.