The expression "LGBT lifestyle" does not have any sense. People have many different lifestyles, no matter their sexual orientation.

Sexual orientation conversion therapies does not work, they can only harm those that try them. According to World Psychiatric Association:

There is no sound scientific evidence that innate sexual orientation can be changed. Furthermore, so-called treatments of homosexuality can create a setting in which prejudice and discrimination flourish, and they can be potentially harmful (Rao and Jacob 2012)

Source

Sexual orientation cannot be changed. It can only be repressed or expressed. And repression can produce psychological disorders and repugnant conducts, like pedophilia among celibate priests.