You don't have to be a monk and grow your own food, you just have to continuously meet your monthly and yearly expenses with proof of work income for your hodl period, I.e. keep your stack. Ideally stack more along the way. You spend only from your income, not from your stack. Until you hit your grand milestone, whatever that is.

Over 20-30 yrs you should also work towards increasing your income by becoming more skilled in work/business, so you'll have more to spend and live on along the way