97% of Buffett’s wealth was acquired after the age of 60, and 99% of it was earned after 50. We in our 30s are truly still so young. If we want to achieve true freedom one day, we must never stop learning and refining ourselves. It’s okay to go slow, but we can’t do nothing. 
At the very least, we should have a strong and healthy body
So in essence what you're saying is we should use Buffet's timeline of making wealth make ours? There are no two same people, one person's method of making money can differ from the next person's own and if we're mentioning people who started recording success in their late ages, the chief amongst them should be KFC. At the very least, we should have a strong and healthy bodyThere's the saying that goes: make hay while the sun's still up. Take advantage of your youth because when you give yourself the excuse that there's still time for you to make money and you waste your youth, the best time may never come.
You can keep refining yourself but it might amount to nothing, or you end up not achieving what you aim for as a result of where you find yourself.