i left home and the religion at 19, unbaptised, i also kinda shuned my family more than they shuned me.
the difference with me is that i still thought that it was the truth and respected the religion, i just thought that i could not do it and i managed to live happily not caring about it at all. I never talked to anyone about my background until recently where i started really seeing the WT for what it is.
It's a strange feeling because i was not shocked, everything was already beyond me but the difference it made is that now i feel no shame talking about it at all. It's who you are, how you were raised, not your fault especially if you left so young so many years ago.
Im almost excited when i reveal it now, people just react with surprise and curiosity. I don't know what else to say, your friends and family know you and love you for who you are, there is no shame at all you should feel.
I even think that growing up in the "truth" and leaving early without much complications is a strenght as it gives you a certain perspective on things and you really enjoy your freedom. You come from a very different background that people cannot understand but they know it and wont care much. One guy even said to me : " wow my childhood was just plain boring and ordinary, this is something. " almost felt proud lol.
You lived the best years of your life happily =) it's not like others who waste much more precious time in the cult.