not really Negatvie thinker seem lack of self confidence perfectionist might do things very well, just the way they see the things have a big problem.They need to do a certain thing perfectly, but there's no perfect thing in the world; it's no doubt that they will easily get frustrated.

The first thought is "They are two strangers who don't know each other. There is no relation or coincident between them." But after I thought twice, I figured out what relation there is between them... When they encounter an impossible mission, both of they will fail. Why? Because negative thinkers will never try to start it because of its impossiblity. And, perfectionists will never try to end it because of its impossiblity. It's a question about philosophy. And if you are neither a negative thinker nor perfectionist, you will succeed because IMPOSSIBLE IS NOTHING. (http://www.youtube.com/watch?v=bwm9WmzXPwU&NR=1)

i should say no~ im a combination of positive thinker and perfectionist.. Negative thinker might have close reasoning and look before leap every time, but that doesn't mean s/he seeks for perfect from deep mind, that might just be a habit?

Negative thinker: Can not be done. Perfectionist: Have to be perfect, must be perfect.

Well, a perfectionist could be a positive person, so I would say it depends on their character. For example, there are some perfectionists that are so picky that they often seem negative.