Create a basis for such feelings. You need to find at least 10 of their positive qualities and each of them to draw in the kind of the character understandable to you. These characters need to move the pieces of cardboard. One of them can put it in your purse and the other is under plexiglass on the desktop, the third use as a bookmark in the book you are reading. In a notebook keep a transcript of each of these characters. To draw these characters better than just writing quality for two reasons. First – so you will use right hemisphere, which thinks in images and create a new image of yourself. Second – no need to worry that your list will read someone for whose eyes it was not designed.
Work on the speed of your movements. They must become more slow and solid. Force yourself to speak slowly, nothing spoils a significant impression as a rapid confused speech. By external changes, you will move to internal, and self - esteem will appear after you start to produce more solid impression.
Learn to not behave as is customary, and the way you want it. This is not necessarily provocative behavior in opposition to generally accepted notions, however, be prepared to break the rules and not to worry about it. In the West, this quality is called assertive. Recently there was an excellent literature on the development of this skill. It is to see. It is often of decency and expectations of others prevent people to make and implement the right solution. And how can there be a sense of self - esteem, if the person is scared all the time, what can I say about him other? To take into account the opinions of others necessary, but to blindly follow it is not worth it. People with a sense of their own dignity not afraid to break some rules for the case.