I started hrt at 44 years old, now 47 years old, been on hrt for 2 years and 10 months. It has given me serenity of mind, less hateful of myself in general by about 80%. My girlfriend of 4 years plus knows, told her at the 1 year mark and still together, so relationships are possible. The intimacy is not there as much, but then again, I'm a perpetual student, got my first masters in general psychology in July, 2015, pursuing my 2nd masters in I/O psychology. Reason I got my first graduate degree, was to unravel myself and my emotions, and stop being so hateful. Point being, it can get better, life at least and unlike you, have no children(ie. I consider them now a blessing), from being so resentful in my past life. One advantage of being a late bloomer, is that we have more stability in our finances and are more critical, mature thinkers, just by living life longer. You being on this forum is the first step, Educating yourself about what it means to be transgender. Remember, only YOU know if its right for YOU, and transgender involves from full bore GRS/SRS with all the surgeries/voice modification aka bells and whistles I call them, to being a part timer, or not getting GRS, but cross living full time/part time. Dont' let anybody tell you different. I guess if its not been told to you already, a therapist is your first step(or another one if the first or second or third or umpteenth does not work, its a never ending process, until you find one you can relate), just to unravel some of the mental knots you may have (i.e. its what I call then in English, or in Spanish, Nudos en la cabeza, lol, its what my old fashioned parents called them).
Social anxiety you say? I got it, don't like attention either, and try to hide myself with extra baggy clothing/jackets, it works at times, and I think other people around me have caught notice, not too sure, lol, eh fudge it, I think. You gotta leave, a social support network is extremely important, just to shoot the breeze on daily events, FYI and my 2 cents, you'll find someone to chat with, sooner or later, it does happen, mine happened way, but way later in life.
P.S. So we represent on this forum, FYI