Blanket advice: find a therapist that specializes in gender issues.
But yeah, that's pretty much what it's like. I'm going to say "damn the torpedoes" and just charge ahead myself, got my gender therapist, next appointment is when the fun starts, got the psychological history done in the first one...
I'm going to tell only the people who really need to know at first, since I think it'll be easier to accept for others much later when I more look the part if you know what I mean... We all repress it at first, there are early transitioners, but either they're pretty rare or they rarely come here. Everyone else tried to live a cis life for X decades (3 for me) and eventually hit much the same wall you did. It could take the form of her being depressed, invading dreams, a constant pull, dislike of secondary sex characteristics, or all/any of the above.
Everyone's a bit different, I experienced a constant pull for many years like you did, I thought I'd like to be a crossdresser, so I started to grow my hair out and do some lower body exercise to get as close as you can get to female curves without HRT, after a while of doing that it became pretty clear that wouldn't be enough for me, I want breasts, not just prosthetics, and I want to be treated as female, but I couldn't admit that yet. One day I decided to decide once and for all, either I want to be transgender, and I do it 100%, or I just remain cis forever. So I set out to figure that out over the course of several months, I'd reflect inward at it, research everything involved in transition, HRT, GRS, FFS, voice training, hair removal, everything. I'd sit and reflect each night on it, browse these forums, etc. The experiment that convinced me to make my account was while shopping (in the men's department) I decided to basically just buy what I WANTED, rather than what fit the stupid empty persona I had created to fit in. And you know what, I looked way more feminine than I should in it, I got it home and I'm like crap, I can't wear this outside even though it's men's wear...
So I made my forum account, and 3 posts in it became pretty obvious to me this was the right path, just talking about it here and being honest made me face the truth, and with the denial filter off it's so obvious it hurts that I've waited so long to start transitioning for real just because I wasn't "sure" yet, getting that therapist won't hurt anything, covered by insurance in most states I think... There are at least five states that also cover HRT, and GRS too.
So you know, settle in and see what comes out of your own mouth basically...