I've read a lot of posts about how much progress some people on this forum have made since taking HRT, so I thought I would toss out my experience after being on estrogen for a year plus a few months.
My doctor started me on oral HRT and increased the dosage twice until I was on what is considered a full transitioning dosage and stayed on that for a few months. She switched me to patches and I used them for close to 6 months, but I didn't particularly care for those so she switched me back to oral earlier this spring and I've been on them since.
The most important benefit I've noticed from HRT is that I feel really good, and actually just plain normal. I'm satisfied being "me" and have no real desire to transition and it looks like I can just stay this way for the rest of my life. That would really make my life a lot easier if I can do that. I feel comfortable now wearing men's clothes, and I really no longer have that overwhelming desire to dress in female clothing. I still do it occasionally but it's mainly because I like the way they fit, but it's not because I must do that to fulfill a need.
I've had what I would call a little bit of breast growth, but not a whole lot. It's just enough that I shouldn't go without a shirt (which I haven't done is recent years anyway), but not enough to need a bra or be noticeable under male clothes. So I guess I'm really quite lucky.
I've read any number of times about the effects of estrogen on your brain. I'm not real sure what those effects are because I don't think I've noticed anything there. I'm not saying it doesn't happen, but I haven't experienced anything. My brain works just like it always has and I still enjoy doing all the things I've always done and still have the same interests.
There's not a day that goes by that I don't wonder if maybe I'm not really trans at all. Many transgender people know absolutely for certain that they are, but I still question it daily. But I feel absolutely great on estrogen and have no plans to quit.
Anyway, my experience is probably quite a bit different than most I read about on here so I thought it would be nice to share mine.
I wish everyone the best and hope your experiences on HRT are everything you want them to be.