We choose the lives we lead. We choose sadness or happiness; success for failure; dread or excited anticipation. Whether or not we are conscious of our choices, we are making them every moment.
Accepting full responsibility for our actions is one of the requirements of maturity. Not always the easiest thing to do, but necessary to our further development. An unexpected benefit of accepting our responsibility is that it heightens our awareness of personal power. Our well being is within our power. Happiness is within our power. Our attitude about any condition, present or future, is within our power, if we take it.