Also, this doesn’t work for everyone, but remember that if you’re a boy, your part is a boy part. Why? Because it’s yours, and you’re a boy. The same for girls, and enbies, and other non-binary identified humans and beings, etc. etc.
(Yes, it is absolutely okay to feel dysphoric and want other parts…just know that gendered parts is an uncool social construct. Never let that influence what does or doesn’t make you who you are or want to be.)