I used to have buck teeth and braces and was shy and awkward in my early teens but then I was a successful model and actress in my twenties. I never really saw what the casting agents saw, I was still the buck teeth girl iyswim.
I am in my 50s now and am finally comfortable in my own skin. I never wear make up, bother with moisturiser or get my hair done and am the same weight as when I was in my twenties.
I was 'scouted' many times by modelling agencies before I decided to give it a go so it wasn't as if I went looking for that type of work, the work literally came to me. Sorry if that sounds conceited.
The only way I could deal with it mentally was to detach: if I wasn't successful for a particular role then I just said to myself, oh I haven't got the right look for the product rather than take it personally.
As far as men were concerned, I had a ridiculous amount of attention which put me off ( I didn't marry until my 30s). I had lots of male friends but did not date any romantically as that would have upset the friendship group. It sounds odd to say it but as all the guys in the group (whether at uni, travelling, work etc) 'seemed' to have a thing for me it would have caused friction between the friends if I had gone out with one of them so I never let on who I fancied so it was quite a lonely time.
Girls who were aquaintances were often jealous but my closest friends were great. Funnily enough I found US girls bitchy but Ozzy girls lovely.
I don't regret becoming a model and actress as it took me around the world, paid very well and I was able to buy my dream home so left me financially very independent. I had very high standards so I never did glamour modelling or anything of that ilk and I was treated like a princess and I was not subjected to any sleazy behaviour whatsoever as I was told I came across as very aloof 
It was a very artificial world. I probably became more selfish and self entitled than I would if people had believed in the buck teethed version of myself. I am an artist now and feel far more fulfilled but insecurities don't leave, they just change. I do worry whether a commission I have just done is going to be liked.
My dds are incredibly beautiful (more than I ever was that's for sure) and have been scouted too. But I think it's more important that they are kind and thoughtful (which I wasn't then but hopefully am more so now).
I used to 'take take take' as being a model puts you in a position of advantage over others in so many areas: free entry, free meals, clothes, VIP treatment. These days I much prefer and get more pleasure out of 'giving'.