Convincing someone that they have lived a lie is important - but that just gets you to the starting point to the rest of your life. My advice is - don't do it unless you are willing to accept the rest of your responsibility.
Understanding TTATT is just the beginning of a very complicated and HARD process to create meaning to your life. This is why I am reluctant to preach TTATT. Understanding TTATT is easy, the rest is really - really hard. I don't want to be responsible for what happens next. I have my own stinkin' problems. This may be (and is) a very selfish perspective. But I don't want to be responsible for what happens after they learn TTATT.
Those well meaning people who were so happy to convince me TTATT disappeared immediately after they accomplished their goal. I really don't have warm and fuzzy feelings for these opportunists.