Never was convinced it would be worth the time and money to go further.
I have some close friends that have gone as far as the SELP courses. While the Landmark program probably gave them some benefit in terms of maturing and becoming more functional people, I couldn't say I've seen lasting significant positive alteration of the person.
My opinion, if someone wants to evolve as a human being, sit down with the four gospels of the New Testament and resolve to devote yourself to try to follow Jesus. You will find that a lot more difficult than SELP, but infinitely more worthwhile.
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