First,  transgendered individuals are not transvestites - the two are completely different.

Second, it's impossible to align a transgendered individual's mind with their body - any treatment has to be physical.

Moreover, in an ever growing number of Canadian provinces and US cities and states it's illegal to subject minors to so called "conversion therapy" (which is a blanket term for any treatment that is intended to change an individual's gender identity or sexual orientation).  Not only doesn't it work but it's actually harmful - if in doubt, google "Leelah Alcorn".