Ask HN: Starter or finisher?

Background: I'm quite a starter myself; I'm extremely curious and I'm always looking for new stuff to do. I like picking hard problems to solve. Once I get half way through the solution, having 'figured out' the hard parts, I pretty much lose interest in whatever I'm doing and I look for the next wave. This has been fun so far, but its beginning to get annoying. I've been forcing myself to finish one project I've been working on, but progress has been slow (but steady).

Curious about the HN crowd: * Do you identify yourself as a starter or a finisher? * Is your co-founder the same as you, or the opposite? * Does being a starter or a finisher impede you in any way?