Seth Godin wants to know:
Which of the four are getting in the way?
You don’t know what to do
You don’t know how to do it
You don’t have the authority or the resources to do it
Once you figure out what’s getting in the way, it’s far easier to find the answer (or decide to work on a different problem).
Stuck is a state of mind, and it’s curable.
My $0.02: stuck is a choice (albeit one we rarely know we’re making . . . ).