Environment matters a lot. It's not "travel for 1 week" that will cure the mind, but rather, removing the slave labor you don't enjoy from the box entirely.
The author seems to miss this critical point (that many people are unhappy with their day job because it's basically debt/wage slavery without ownership).
I haven't done "slave labor" for more than 20 years, having initially imagined I was rich enough to retire at 32 (that turned out to be wrong), then later converting an open-source passion project into a very comfortable middle class living. No boss, no rules, no schedule, just lots of people who love what I do and that includes me.
However ... the Box of Daily Experience is still a feature of my life too.