I can say my life is definitely more exciting... and happier for the most part. However, I'm not completely happy. I've been living full time for over 2 years now and I still have days that I wonder if I should have done this. The truth is that I wish I could go back to being a guy and not still want to be a girl... but I don't think that's possible... especially since I've gotten to experience my life as a woman for so long.
I tend to worry about the future a lot.. what will I be doing, who will I be with, will I always feel some ambivalence and so on.
I remember when I first started transitioning thinking that Oh if I can pass then I'll be so happy and content and everything will be perfect. However, that's not completely the case. I wake up passing, and would actually have a lot of trouble to not pass as female... and everything isn't fine and perfect like I thought. I miss a lot of freedoms I had as a guy, and I also feel restricted as a girl because I haven't had my SRS yet. I keep telling myself that once I get SRS then everything will be fine, and I suspect there is a lot of truth to that, but still... what if it's not? I guess that's my biggest worry.
Still, my life as a girl is exciting. I like how people treat me, especially boys. I like how I look in the mirror, how my body feels, how I can wear the cloths I want to wear, how I don't have to feel like I'm hiding anything anymore (especially in conversation, I was very restricting with my emotions and facial expressions as a guy). If ever I were to go back, I would never be the person I was before I transitioned... I would be a much more feminine, pretty/androgynous guy. I realize that who I once was is never coming back, and at times I feel sad or guilty for that.
Sorry to be depressing but I wanted to be truthful. However, knowing what I know now... I would have still transitioned.