How To! gave dozens of people advice this year about solving their problems. Now, we track a few of them down to see how our experts’ suggestions transformed their lives. We follow up with an actor trying to get buff to play a superhero, a bachelor hoping to cook one perfect meal, a therapist who can’t fall asleep, an American expat who can’t decide where to live and a former cop who suffers anxiety attacks. We discover a bunch of useful tips for achieving change that sticks — just in time for 2020.

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