Pantzer or Plotter?

I'm a pantzer. Meaning I write by the seat of my pants, making it up as I go along. This is directly opposed to a plotter. There's pros and cons to both methods and I actually think it would be easier to write a novel as a plotter, but I've spent months and months trying to be one, and it has never worked. The more I plot, the more I analyze. The more I analyze, the more I doubt and rethink and second-guess until I am hopelessly snarled and not even sure what I'm doing any more or if I even want to write. A bloggy friend of mine, Thomas Kingsley Troupe , author of Patrick's Super Socks and other fabulous pieces of fiction that haven't been discovered yet, gave me some advice not too long ago that, for me, cut through all the millions of other pieces of advice floating around out there. He said write the story quick before you get tired of it. I usually get stuck half way through because by that time, I'm so tired of the story, I lose all interest. I'm trying to take his advice though. I don't have much time to write, but I get an hour in the morning before school, and if I'm not too tired (although I usually am) I get 1-1 1/2 hours in the evenings. Ever since Christmas break, I've just been writing and writing. I never know what's going to happen next, so I write to find out. The problem is that I kinda forget stuff I wrote 50 pages ago (actually I forget stuff less than 10 pages ago). That's one time it would help to be a plotter. Sigh. But I'm at a juicy part now. One of the characters just decided to kiss another one. Here I was, writing along with no thought of that, and this guy just decides he likes this girl and he's going to show her...NOW. Without even asking me, the writer. Like he was a real person or something. Oh wait.