So here's the thing about Landmark - They really help the people who really need help, really annoy the people who really want to be annoyed and kind of bore everyone else. My wife did a week-long Landmark seminar. Her boss (at the time) was probably nine seminars in. She wasn't hurting for the money and it didn't make her a worse person. We even recommended a friend of mine do their weekend thing. His reaction?

"Boy, there sure are a lot of people way more fucked up than I am."

Yup, perfect. Glad you got what you needed out of it. Glad you don't think you need more. Happy you had the opportunity, happy you've decided you've drunk your fill. Did Landmark need the money? Nope. Was it the cheapest way to get him out of his self-destructive rut? Probably not, but it worked.

It sounds like you have no need for Landmark. After a week, you will have determined conclusively that you have no need for Landmark. However, the people who sent you to Landmark will feel all warm'n'fuzzy about it, which will make them that much more likely to send more money your way in the future.

Welcome to Mindhead.