The emotional journey of a trans person is by far the hardest part, or at least it was for me. It usually begins during childhood. Often other children realize we are different before we ourselves do.
Often our first source of related discomfort comes when other children taunt and tease us for being different. I personally was teased because I acted so much like a boy. I did not understand why they thought that. In my mind I was acting normal. As years went by the taunting and teasing only got worse. My parents also noticed from a young age that I was different. For example I would spend my time playing with hot wheels and trucks with my brother instead of playing with female orientated toys with my sister.
Also world war ll would begin all over again when I was forced to wear feminine clothes. My mother would send me to school in and dress and I'd either ditch school all together or take a change of clothes. Only after a conversation with my mom later in life did I discovered she thought it was my way of acting out and being difficult.
I personally did not consciously come to the realization I was a man till my early 20's. Even after I came to that realization I was not ready to accept it. I spent more time in denial before I as finally at a point I could be "Ok" with it. I remember thinking "I'll be damned if I am one of those freaks!" many times before finally coming to terms with and accepting it. The real struggle began when I did finally accept it. When acceptance comes, actions must follow. Fear immediately became an emotion I felt on a regular basis. What will my family think? How will people treat me? What will people think?