I think it can also help to have a good long hard look at your different friendships. We can have different kinds of friends, where we each bring different things to the relationship - ie they might be good at giving practical support, rather than emotional, but you are the person they come to when they need to talk about their feelings. You might then have some friends who you feel more able to relax and talk about feelings with than others - doesn't mean the others are crap friends though, just that they meet different needs, or maybe you guys would need to develop your relationship to make it more well-rounded. I guess I'm trying to say, identify one or two friends who you feel it would be easiest to begin sharing your feelings with. Baby steps