This as-told-to essay is part of Lonely at the Top, a series that examines the link between wealth and loneliness. It is based on a conversation with Jeremy Barker, founder and CEO of Murphy Door, which specializes in selling hidden doors and storage solutions. It has been edited for length and clarity. I was only making $6.13 an hour. I always knew I wanted to be a firefighter and started training during high school. I would have been thrilled with my career, but the shockingly low pay wasn't