Gender dysphoria was different to me, I suspect, than most. By my nature, I am not very stressful - I rarely feel impacted by the pressures of life, handling most things with ease. The greatest resistance I usually face is finding the motivation to do something, or getting over how boring a task is.
Because of that, gender dysphoria catches me off-guard. It is the only factor that can truly stress me out - increased heart rate, stressed and sometimes forced breathing patterns, intense jealousy, and often anger or sorrow, depending on my mood. I could look at a girl displaying her cleavage, and immediately feel my chest tighten, my heart rate increase, and feelings of resentment and jealousy set in. Or it could be regret, or sadness. It's often resentment and jealousy for that particular piece, though.
... and it's worth noting that I still deal with that. It's actually the reason I dreamt about a witch, and a deal I made to get boobs, just this morning.
It's not just body-envy that contributed to dysphoria, though, of course. A very large factor was being excluded from being friends with girls - they just flat-out didn't want me around up until high-school, but by that time the damage was done. I was allowed to hang out with boys, but I was more physically present than mentally and emotionally there. I drifted through my days practically not existing: I interacted with people, sometimes unaware that I was even doing it, I got my grades, I went home, I slept.
By middle-school, I referred to myself formally as a "ghost" - a title I still carry around with false pride. I gave it to myself in honour of my ability to go completely unseen by hundreds of people, and to be very forgettable to the few that do acknowledge my existence.
Gender dysphoria came from every aspect of my life, causing different emotions and physical symptoms for each circumstance from which it came. It arose socially, jealously, introspectively, and pragmatically. I couldn't escape it, and I knew that it would only get worse over time - at twelve, I predicted that dysphoric thoughts would consume more and more minutes out of each day, until I could no longer think of anything else. It would also become more intense, especially after that point, where it would rise exponentially. This is known as a positive feedback reaction.
I used to deal with dysphoria in one of two ways. The first way involved using anger; I would put on some death metal, some hard rock, or some depressing emo music, and I would proceed to daydream about various things. Often, this was about having fantastical magic powers, and being able to kill many people and destroy cities. The amount of anger I held inside at my peaks felt strong enough to destroy the walls of my bedroom all by itself, without magical powers. The emotion was very tangible, and powerful, and far beyond the point of creating violent desires. It filled the air like the heat of summer.
The second way was more healthy, and in my latter years (high school and post) was far more widely used. Instead of tapping into my incredible rage, I used my sadness to find release instead. I would usually turn on some emo music, and spend a night crying, hours at a time. So far, my record for solid crying stands at a period of five hours. I enjoyed crying thoroughly, and I sought out new ways to make myself cry when it started to become difficult with older resources. The anime Elfen Lied was the most helpful I have ever found, and to this day, its song Lilium can make me cry with ease, even though I have heard it over a hundred times.
My sorrow was also tangible. It had and still has a particular smell to it, and it feels very nostalgic because most of my more vivid childhood memories involve me crying.
Both emotions distanced me from humanity, reinforcing how different I felt, and strengthening my contempt for human beings as a race. I haven't recovered from my dysphoria yet - I know it's still a present force in my life, but it has nowhere near the influence it once had - and I'm not sure that I ever will. I hope that I may... but I face the possibility that I will always carry resentment for humans, to some degree.
Afterthought: I forgot to mention how the use of my voice affected me, so here it is: I found it very difficult to speak at twelve years old until full-time at eighteen, additionally. My deepened voice made me cringe with every uttered note, so I often refrained from using it. It was a source of great emotional pain, with many physical symptoms. It was probably the third-largest source of my dysphoria, with the ones above it being my jealousy of other girls, and primarily my hatred for my own body and its appearance.
And ... that's what comes to mind at the moment. I expect my reactions are very different from many, but such is the nature of being and organic life-form.