What is "taking responsibility"? Convicted criminals are supposed to take responsibility for their crimes. Teenagers are told to take responsibility for pets, homework, chores and other things. Taking responsibility is pledging to provide a response to something. "It's my responsibility" is also, "I take the credit when it succeeds, and the blame when it fails."
Taking responsibility is a sober thing. We do tend to go off in compulsivity around giving blame and taking credit. A spiritually healthy person doesn't need to blame or take credit to prop up a self-image. Taking responsibility, properly speaking, has nothing to do with giving blame and taking credit. Taking responsibility involves two steps. 1.) Acknowledge that something is true or exists. 2.) Provide a response (if needed).