How can I be more honest with myself and others

I'm not honest with myself sometimes, but what I hate even more I'm not honest as much as I'd like to be with others. I deny everything I would most likely say yes to if I could...am I to cold/closed off? Not to mention there are questions I want answered by others, but I don't know how or if I should ask those questions because of the possibility of hearing something I don't want to hear...can i do anything to change that or better myself in a way?