The commitment part of acceptance and commitment therapy can mean taking a leap into the unknown, very much like the heroes of ancient myths, and even modern day stories.
The first stage of the mythological journey—which we have designated the ‘call to adventure’—signifies that destiny has summoned the hero and transferred his spiritual center of gravity from the pale of his society to a zone unknown…[a] fateful region of both treasure and danger.
Joseph Campbell. The Hero with a Thousand Faces.
The job of the therapist is to create situations in which the clients engage in a leap of faith into a future that is unknown and—to the best they can tell—in the direction of their values. A leap of faith implies the willingness to have whatever happens when one makes that leap, to touch down wherever one lands.
Jason B. Luoma, Steven C. Hayes, and Robyn D. Walser. Learning ACT: An Acceptance & Commitment Therapy Skills-training Manual for Therapists.