Hardest parts for me, personally:
- "Oh, it's just a phase, you silly-filly. You're a girl because [my] god made you one! Now run along, and shut up, because your identity is invalid. Only *I* am allowed to ID you. ^_^"
Dealt with it by ignoring them, and in a conversation with my dad concerning god vs. gender (he was pretty wary about the god part, since he knows we have differing beliefs) I brought up how no one can speak for a deity, so it's entirely possible body and mind can be opposite as a challenge. Others... my identity is my identity. I don't tell others who they are, so they've no right to tell me who I am.
- Unacceptance from family. There was a "legal name" and "preferred name" space on a medical form, and when I wrote my legal name, and then my male name in the preferred space, my mom scribbled it out and yelled at me.
Dealt with it by... well, biting my tongue sometimes, correcting them other times. Depends on who it is. My dying, prejudiced grandma can see a tomboy if she wants. I can get away with telling my sister I'm a boy, because she's 5 and is pretty accepting. There are fights. There are discussions.
- Physical dysphoria.
I bind, I have an stp packer that helps remarkably, I use mascara on my eyebrows and eyeliner/eye shadow on my upper lip, and if none of that helps, I write. I write in a journal or something, or I'll sit in the shower in the dark for a while. My dysphoria comes in short, spread-out bursts that never last longer than a day.
- People just not ->-bleeped-<-ing getting it. Calling me she/her, or by my given name. Referring to me as a girl, or constantly asking me about the state and texture of my genitals without the excuse of being my doctor or someone I'm boning.
Dealt with it by... I understand, really, if I'm not close to them at all, so they don't know. But for friends and such, I'm just really insistent, but patient. My sister will call me her brother, but she uses my given name, which makes me cringe. I tend to just correct people and say it's a family nickname (which is kinda true), but they can't call me it. As for genital questions, I just tell them it's none of their business, that unless they wish to suck it it is of no concern to them, or that I have unicorn testicles and a horn in the place of a penis.
I never really had self acceptance issues. I think around the time I realized I was a guy, I was weird about it for about 10 minutes. Then I just took it to be a part of life, and never had a problem since.