Creating self esteem is the focus of today.
How do I create self esteem in some else? There is a enourums number of article dedicated to this thema, just googl it and you'll find one really good, ex. Here. It is though still quite difficult to manage to do it. Especially because normally who has really self esteem doesn't normally recall how he did it or worse doesn't realize how he does it! I truly think it is hard to understand how they did it and even harder to explain. The fact that someone has to actually learn how to have it makes a tangible thing, which in reality is not. Having self esteem comes, period. It only comes automatically when you don't even think you will be able to, it happens exactly like falling in love, you don't know how it came and you don't even know how to not feel tha way. It just happens and it's unstoppable and uncontrollable, but irrationally good and empowering.

So, why am I writing this if there is no way to "learn" how to boost our self Confidence?
Because first I think it's better to know it and be conscious about it, it's un wasteful to play it around and push push push for what?

Second because I think there is a key, really. The key is to stop basing your life to other people behavior or perception but starting to be your center of energy. Balancing your emotions towards actions and not thoughts. Doing things, many things, learning new competences and observing who you admire and basically copy him/her. Working hard and when you have doubts, work harder.
Make yourself your motivation. And if all of this doesn't convince you, play some music very loud (pink floyd are a good inspiration) and listen to it, without doing anything. After, what it came out will be your dragging ship to new action.