This is what worked for me:
Step one - write every day. Sometimes, you don't feel like writing one bit. I took down that one page minimum and brought it down to a measly three lines a day. Sometimes, I'd write more. The idea is to at least keep you in your writing.
Step Two - Re-Read. Start taking notes as to what themes come back. Flesh out two or three themes. Conentrate more on those (although you can still roam at this stage).
Step Three- You keep re-reading and you keep re-writing and eventually, you get a project you'll want to complete. Make an outline of your project.
Step Four - Write a first draft from beginning to end. Don't worry too much about whether the story all fits together at this stage. Just get a first solid draft through.
From that point on, this is where most writers end up quitting. Here is where we separate those who really want it from those who don't. It's not just the fun creative stuff anymore. The real hard work begins. And it's a marathon, not a sprint.
Step five: start re-reading and correcting. Iron out plot problems. I used to have brain storming sessions when I said to myself: OK. This part doesn't work. Ideas - so I'd just scribble whatever came to mind and eventually had something that made sense.
Step Six: Once you know you're whole plot, write a second draft from your first.
(Now we get in the nitty-gritty stuff)
Step Seven: Go over your manuscript as many times as you need and polish it. If it doesn't yet satisfy you, it's not complete. Correct grammar, pay attention to vocabulary use, make sure the plot is consistent and makes sense to you. You may need to go over several aspects of the plot and you'll probably have to go over it two, three times, probably more.
Best of luck to you.