Hi Nelli
Yes I can relate to what you say, quite a lot. The difference with me is that I haven't gone to seek any help with my low self-esteem. I've always been very reclusive and found it very hard to socialise with people to great lengths. As a child I wasn't encouraged to go out and make friends and my parents were very reserved themselves, which I'm sure can be why I am the way I am. I've a sensitive personality and am quite emotional but try hard to hide this in order to blend in more with people, but of course it isn't easy. This prevents me from making close friends and I'm yet to get into a serious relationship, something I can't see happening whenever I try to put my mind to it.
I think it's good that you've faced it and found some help even if you say it's not done much good so far. I think that a simple book or lecture couldn't help enough but even so it would encourage a different way of looking at the problem. For me I find that it's really deep into my personality, and to change would be extremely difficult however it is treated. I haven't found anyone who I can discuss this with on a personal level.
Would you say that your experiences come from high levels of anxiety when you are around other people or places? My lack of social experiences and high sensitivity is what causes that anxiety, so I find myself shying away from long social interactions.
I've only ever thought that if I got into a relationship that was with someone I truly loved that this problem may at least improve as self-confidence is something that would naturally improve, and of course may change the way people perceive you once you're happier about yourself.
Sorry that I haven't provided much for you to work on but hopefully my relation to this has given you some support. I only found this message board today after wanting to seek similar advice.