Short hair cut.

So. I have a haircut scheduled for 11.30 am on Saturday. I've wanted short hair my whole life and never had the guts to do it. Lately I've been asking some of my friends if I should cut my hair short or grow it out. All but 3 (I've asked between 10 and 15) said that I should grow it out. It just makes me feel like they're all saying "we liked your hair more when it was long!" I used to have SUPER long hair (see here) and cut off 8 inches of it at the beginning of the summer. This is my hair now. This and this are ideas that I'm looking at (not those styles exactly but a longish pixie cut).

I guess I'm looking for words of encouragement or opinions on what I should do.