Writer's Angst (formerly Writer's Block)

Just because I haven't posted anything in a while, and it might help me get things in order.

I am very good at beginning stories.  Not so good at finishing them.  Usually I get about halfway through, then realize that a new plot development changes the way everything was from the beginning.  At this point, I can either a)  Keep writing and go back and fix it later, or b) start all over again. 

There is also what I term the Brick Wall, though the more conventional imagery is Writer's Block:  The story is going along just fine, until all of a sudden everything just stops.  The story is not over, and nothing is resolved, but you are just about to enter the third act, into the deeper machinations and eventual resolutions of things you haven't thought out clearly yet, but assumed you would cross that bridge when you came to it, and...wham.  No bridge, but a brick wall.

The sum of my major works to date, all ending in brick walls:

1)  (Untitled*) - probably my oldest story, which has existed in my head in some form or another since I was thirteenish.  Of course, what I have now hardly bears any resemblence to what I had then.  There are wizards, and one of the major character is an assassin, and that's about it.  This story is like a canvas that has been painted over and repainted so many times, it cannot help but be distorted by the colors and textures of what it once was.  I am considering peeling it all of, tossing it aside, and starting fresh.  Only I've tried that, and somehow, the story always comes back to me.  Maybe this time for real.  Until the next grand variation pops into my head, and I think, Maybe this time it will work.

2)  "Glass and Bone" - a sort of steampunky thing that may or may not also have magic in-universe.  That may or may not be in the same universe as story 1.  A man tries to bring his dead ex-lover back to life.  And succeeds, for the most part.  Only she never loved him as much as he loved her, and had honestly moved on before she died.  And then there's some sort of retribution for breaking the laws of nature, or magic, or both, but as soon as the woman appeared...wham.  Brick wall.

3) (Untitled) - A xenofic about griffins.  Who are in the Frankfurt Zoo.  And are sentient.  And of course, at some point someone realizes they are sentient, but then we hit the brick wall.  I haven't the faintest idea how to bring this about, or what to do about it afterwards, or if I should just leave it where it is and make it a tragedy.

4)  (Untitled) - I haven't even started a draft of this one, it's just a loosely connected set of ideas about psychic detectives, who do not solve supernatural mysteries but instead go to great length to conceal their powers and just use them to have an edge in solving normal mysteries.  Until something different happens, like a sudden slew of murders among espers, and probably some sort of conspiracy...because I haven't started writing it, there are still more doors than walls.

 
*Yes, most of these are untitled.  I'm worse with titles than I am with endings.