Is it normal to think you are less pretty than you actually are?

i feel ugly all the time, sometimes i feel pretty then a pretty girl comes around and that all goes to hell. or i see myself in the mirror or a picture and im like oh dear god i look gross! my bf compliments me and tells me how pretty i am and my friends do but i feel they are just being polite cuz i am in no way pretty, at least thats what i think. i probly got it all wrong but i dont kno how the hell to change that either..

I'd say that's pretty normal. In fact it really annoys me when girls are all like "im so gorgeous look at me I'm amazing".

its better than being shallow and conceded, just think to yourself as being happy and not as being pretty, happy is better

Normal i think

i feal like im very ugly
-i dont really know

the same happens to me...when i look at myself in the mirror i notice thousands of defects but people around me always give me compliments... when i see an ugly girl my self confidence increases but when a cute girl passes me ahead my self confidence suddenly drops and i feel the ugliest in the world... so i put myself on a hard diet trying to get the perfect body even if i know that it doesn't exit... how can i have a better self confidence?

Sane here man. I feel ugly all the time. But unless im hallucinating i do notice wondering eyes.. But maybe not..

Try pampering yourself, get your hair done, get a facial or your make up done, get a massage. Doesn't have to be expensive, depends where u live but u can find beauty colleges that get students to train on the public and its free for u or for a small price. I live in Australia and they do that here but I'm not sure where u live but they may do it.
It always makes me feel better and chances are if u get compliments about being pretty and attractive, u most probably are :)

I love girls like you

same here... but i just dont do anything... as long as guys think im hot... im fine

nothing wrong with a bit of modesty

Head to Vegas and try pole dancing. If all what you mentioned above didn't boost your self-confidence what else will ever do??