First person I came out to was a boy I liked around when I first started hormones, so about age 17. He was sweet and accepting. I'm now turning 23. All these years in, all my documents changed, my entire family is accepting.
Really, I don't know what I did to get such a wonderful family, but of 6 siblings, my parents, my grandparents, not one of them hasn't come to 100% accept me (though some struggled for the first year).
Same story with my friends. I'm blessed to have gotten to love and be loved by so many wonderful people.