Tim Ferriss started his career like many people just out of college do: Stuck in a not-so-glamorous desk job.
"When I wasn't driving my mom's hand-me-down minivan to and from the office in San Jose, California, I was cold-calling and cold-emailing," he writes in his new book, "Tools of Titans." He wasn't enjoying himself. "'Smiling and dialing' was brutal."
Today, the entrepreneur and tech investor is the author of three New York Times bestsellers, including "The 4-Hour Workweek." He's also launched a successful podcast, "The Tim Ferriss Show," and has starred in a TV show, "The Tim Ferriss Experiment."
In "Tools of Titans," Ferriss shares 17 questions that have "dramatically changed" his life, 10 of which CNBC highlights below.
When applying these questions to your life, "be sure to look for simple solutions," Ferriss writes. "If the answer isn't simple, it's probably not the right answer."