We know underemployment is hard to measure. Even the government has difficulty measuring it.
But that said, you certainly know when you are unemployed. It’s when you have a job, and it pays the bills for the most part, but your talents are worth so much more.
Getting out of the underemployment trap requires a shift in mindset. You have to understand your day job as the one that produces a check, and your night job as the search for your truly desired