You have to like yourself and trust your own judgment. Do you journal at all? That helped me get started. Just enjoy some of the ideas you come up with, your sense of humor, the way you approach certain things and "remember" that you enjoy those and use that person, whom you enjoy as a friend. We all talk to ourselves, start saying encouraging things to yourself, from this person that is creative, humorous, honest, warm and comforting, etc. so you have an internal two-way going that's as interesting and pleasant as friends on the outside. Then the two of you will do something and be quite happy about it and other people will enjoy it and you'll enjoy their enjoyment. If they don't enjoy it, don't comment, you won't "notice" particularly because you, yourself like it.