I've come to the realization that self confidence is all about being comfortable and proud of who you are inside and out. Not caring what any one else thinks. This creates great self respect and in turn greater happiness.

I practice this by picturing myself in a bubble blocking all outside opinion and repeating the phrase "I am immensely proud of myself/who I am/being me. I conjure up the feeling of being proud in my mind and relay it to the self/my personality.

This seems to help with everything in life, not just seddit. Once you can be comfortable and also proud of who you are and accept who you are, both the good and the not so good, it radiates from your pores and people can tell.