Well for the record I am post opp TS. I NEVER once went to a therapist. I simply knew.
In my opinion you simply know you are TS or not. What is more complex is wether you are willing to make that big decision to transtion. Now on the other hand if you are considering transtion you might wish to watch two of my videos on youtube. They discuss the important things you need to know if ya want to succeed in transition. here is the link http://www.youtube.com/user/katesback#p/u/3/3Phn_XUVUS0
You have to crank up the volume since the mic was not any good.
Katie