"I've had crappy manual jobs" and "I've been in a situation where crappy manual jobs were my only viable option" are very different situations. But also, why didn't you want more money at the time? Why were you so happy to have a crappy job cleaning out freezers when you could have organized and got a better paying job cleaning out freezers?

This future millionaire mindset, where you were "happy to have an income" because you anticipated better future returns, is ugly and detrimental to everyone around you. Every job that needs doing should be done for decent pay and with dignity, at a minimum.