Denial is a powerful thing.  I actually researched transitioning three times in my life:
1)  Early 1980's when I was in college and first discovered it was possible.  I longed to be that cute teenage girl in the bikini on the beach, but back then there were only a few doctors and a few places where you could get hormones and whatnot, and they might as well have been on the moon since I was a broke college kid.  So I told myself that having a girlfriend was going to fix everything, gave up the secret crossdressing, and got on with my life.
2)  1990-ish, when I finished grad school and started working, and by then things looked a lot more possible.  But I read that you had to do a one year RLE to get hormones, and that would have totally wrecked my career.   So I married the kind of girl my dad wanted me to, had a family, and got on with things.
3)  Around 2000 after the end of my first marriage came another round of research, and even an online persona.  That lasted until I was in court one day and saw a Judge deliberately misgender a pretty little Asian transgender girl who was in there on a suspended license case (her male name was on the docket).  The judge called her "sir" in this sneering tone.  I cried in my car over that one.  The custody fight over my son was heating up, and I read the writing on the wall.  I crossdressed one last time, looked in the mirror, said "That isn't me," and got on with things again.
During all that time I lived as a slightly femme guy who did some clothes shopping in West Hollywood, and had a thing for swimming in mens bikinis and small speedos.  That was my coping behavior, I guess you could say.  It all came crashing down when I got skin cancer last year.  When I lost my "bikini time" in the sun, it was like someone died.  I kept asking myself, "what was it about that that caused such a huge loss?"  Well, it was the feeling of femininity.  So I said to myself, what could I substitute for that that will keep me out of the sun?  Visions of myself watering the plants in a big sun hat, short shorts, a camisole top....oh boy.  That was when I finally came to terms with myself.
This spring I have already worn a two piece bikini in my pool, under a pair of Roxy board shorts and a loose T shirt, and I stayed on the shady side of the pool.  Even covered up, wearing the girl stuff felt so much better than wearing even the tiniest men's bikini, just as I thought it would.  That's all the confirmation I need that I am transgender.