Some ACT textbooks assert that acceptance is an all-or-nothing state: you are either accepting or you aren’t; it’s black or white, with no shades of gray. I find this an odd assertion.
Harris argues against a binary understanding of acceptance in ACT, proposing instead a graduated continuum from mere acknowledgment to full embrace of aversive experience.
, ACT Made Simple: An Easy-To-Read Primer on Acceptance and Commitment Therapy, 2009thesis