One of the hardest things to come to terms with, is that you are someone, that you are loved and you are worth something. Overcoming low self-esteem is not the realisation that you have met societies standards of beauty. I don't think you're ever going to believe that other people think you're beautiful unless you know it for yourself.
Beauty is an action, and of course comes in numberless varieties. Beauty is humility, beauty is loving, Beauty can be found in anything as long as you look closely. I used to think that issues with self esteem would halt when you reached a certain age. (Man, I had a lot of assumptions about growing up) If self confidence issues were as easy to solve as reading a book or chanting to yourself, I am sure that self-esteem issues would not be a big problem as it today. I think one of the most important things to realise about these issues is that everyone deals with them, but it is more so about how you recover from them and how you see yourself afterwards.
Growing up, compliments were one of the most destructive to give me. Because I didn't see myself as beautiful and I wasn't "societal pretty", I was very sceptical of other people that saw otherwise. When I would get compliments about my eyes I would think that there was something wrong with my mouth and when I would get compliments about my mouth I would think there was something wrong with my body and so on and so on.
I am the worst at giving advice about these things so please don't think of this as a self-help manual. But see this as a testimony about how I'm living every day. Note I haven't said that I have overcome self-esteem issues because I do doubt I ever will. But this is not a bad thing, flaws will always be there but you have to recognise how to deal with them. For example, the shape of my body was always the subject of my wrath, however it isn't the self-esteem issue that I'm familiar with today because I have learned how to dress it and take care of it. Believe me, before this I would read self help books and read articles and would chant things to myself every day, needless to say, this did not work for me at all because it was superficial and it did not reflect how I felt inside.
"The Bible tells us that God gave us worth when He purchased us to be His own people (Ephesians 1:14). Because of this, only He is worthy of honor and praise. When we have healthy self-esteem, we will value ourselves enough to not become involved in sin that enslaves us. Instead, we should conduct ourselves with humility, thinking of others as better than ourselves (Philippians 2:3). Romans 12:3 warns, “Do not think of yourself more highly than you ought, but rather think of yourself with sober judgment, in accordance with the measure of faith God has given you.”" -http://www.gotquestions.org/self-esteem.html