Dick Ruzzin's "Designing Dreams," released July 29, focuses on the rise of muscle car culture and peak creativity at GM after Harley Earl retired.

The 21/90 Rule: It often takes about 21 days (3 weeks) for a new behavior to become routine, and about 90 days (3 months) for it to feel like part of a lifestyle. The 3-3-3 Rule: The first 3 days are ...