I was what I would call a "late bloomer" I still grew an inch when I was 20 and before I started working out I wasn't one of those big bulky guys trying to slim up. Now I'm 5' 10" and 207 (I've been up to 220) and have always been lean. People comment on my size and training intensity in the gym and I am happy with my build but I still don't feel like a "big guy". Anyone else ever feel that way?
Personally, I think that it stems from being a smaller guy in school. I've never had a self-confidence problem since finishing puberty (you know that stupid age) so I don't think it's that. Just that my self image of myself when I am walking down the street doesn't match my actual image.