10. Which statement is incorrect according to this passage?

A、A. Concern about the past problems and future difficulties makes us anxious, frustrated, depressed and hopeless.
B、B. We miss out on life when we are busing making a life.
C、C. Life is like a dress rehearsal for some later date, so we need to wait for better tomorrow.
D、D. Keeping attention on the present moment will help combat fear.