Have you done a search? there are many threads on this and related topics. You can use Advanced Search or Tag Search and look for "co-primary or co-primaries," "equanimity," "foundations," and other keywords.
The world opens up... when you do.
"Oh, oh, can't you see? Love is the drug for me." ~Bryan Ferry
"Love and the self are one . . ." ~Leo Buscaglia "