I am the only person responsible for my life: my choices, the way I use my time, my perspective, the roles I allow myself to take on, the way I use my resources, what I say Yes to, what I say No to, how I think, what I allow myself to dwell on, what I offer, how I honor my own limits, how I care for myself, how I contribute to my community, how I allow others to treat me, what I tolerate, what I stand up for, what I believe (both conscious and unconscious) and how those beliefs drive my behavior, etc.
Taking radical responsibility is an outgrowth of GARDEN/notes/The law of ownership.