Yes, you’ve heard it right.
Wait for the bear market to come where the prices for coins are low. Buy/DCA as much as you can, go all-in (but have emergency money left juts in case). It sounds difficult, but live a humble, but healthy life for at least 5 years.
In this 5 years, DCA and buy in more crypto while mining for fiat. Do not look at charts. Looking at them stresses you even more and the temptation of taking profit (too early) is too big. Be patient!
After 5 years, you are filthy rich, if you invested in the right coins.