the perceived 'higher being' that you describe that are Freemasons. I'm sure you don't mean to sound patronizing, but to me that is how it comes across.
I hope not. That is not what I have said or meant.
'esoteric/introspection/self development' reminds me a lot of Rudolf Steiner's work*
That hurts my feelings 
I talked about introspection, bettering oneself, building a more tolerant, rational, better world one person at a time. I said anyone can do it if they want to, and that it is the work one needs to do on himself or herself, that nobody else can do for them.
If that sounds cryptic, that is not intentional. Introspection as in "Who am I? Why do I act this way? I want to change this or that about myself" and then working on herself to change that habit or aggression or irrational beliefs, which would be an example of self development.
All this 'you wouldn't understand' and 'I wouldn't expect you to understand'
You would, but it's hard to explain it when you have no experience or knowledge on the subject. It's difficult like trying to explain a Shakespeare play would be. You can of course understand if you properly research it on your own and talk to Freemasons you know. They will of course not read out the rituals to you (unless you come across 31week's DP who I hear has loose lips
) but they would collaborate what I have said about what Freemasonry is.