My crit partner had an interesting post today: Sarah Bromley. Her blog question related to focus on projects. She discussed how she is a multitasker who goes with her gut. She enjoys working on a projects that draws her in and drives the writing process. If the project isn't moving forward she shifts to something else. (And I have actually witnessed this first hand.) =) But all in all it occurs for the better. I notice that when she hungry for a story she creates a work of art. As writers we move where the wind blows us.
I, on the other hand, tend to have multiple ideas, but I pick one and stick to it. I thirst for the finish line for that one project. If I get hung up, I take a brief break and wait for the Muse to stop riding around town with another author. (I think I'm the person she states that writes very fast. When the scenes come I let them go or I tend to forget them. Which drives me nuts... I want to be done. I need to be done. Because editing for me takes a little while.)
Either way, I think as a writer you need to find something that makes you want to write. That makes you want to finish a great story for others to read. (Or it could be a story for you as well.)