Everybody in this forum already discussed why hard work does not guarantee wealth. The problem is not only in our effort, is where we store the money. If you work and save fiat money, goes devaluing with the time and losing its purchasing value without you notice. Does not matter how much you work and store your money. The currency with fixed supply, like Bitcoin, inverts this logic to work in your favor, because the supply does not increase and does not lose value. The volatility of Bitcoin is a problem for who needs know what will happen in the short term. But thinking in the long term the problem is store money in the wrong currency?
I've been trying to wrap my head around what your actually driving at, if it's about storage of value and which currency or which investment is most valuable to store your money, however your topic talks about hard work does not guarantee wealth, but in the body of your text, I'm trying to collaborate what you've said and the topic in a bid to make a sense out of it.
Wealth in terms of financial stability might come as a result of your own expertise concerning your ability to use money you own and double the money with whatever investment or skill you are good at, the idea of banking money over the years has been discouraged by financial experts, this is because, the money is supposed to be put in an investment that will double its profit and not to sit idle, so whatever currency you have, if you are good in investing in that currency with what you have, trust me you will double your amount.
Bitcoin from your explanation is volatile, and there is no doubt about that, but most investors will tell you to invest with your discretionary income, this is so that regardless of the volatility of the market, you won't have panic because it is from a fraction of your resources that you are investing, this also to let you understand the the growth of your Bitcoin investment wouldn't come in a sudden manner, it will gradual.