Michael J. Fox has written a new memoir titled Always Looking Up and gives an exclusive preview in the April issue of Good Housekeeping, available on newsstands March 10.

The actor talks about how he was inspired by a famous athlete also struggling with a serious disease. "Then, Lance Armstrong showed up, and I started talking to him; I saw all these people with cancer who followed him to Paris for the Tour de France, and I saw the difference he was making in their lives. That put it together for me…having it be not so much about me, but [my being] a vehicle for it."