hard work doesn't equate to happiness and usually happiness comes when you have financial stability and your family could afford whatever they want to afford. it is happiness, those manual laborer aren't lacking hardwork even many times they over working, they work harder than most of the people yet their fate never change because hardwork never equates to more money, but it is required in achieving your dream.
if you trying to find happiness you should know what make you unhappy first, is it financial unstability? the feeling of powerless when you can't afford to pay for food or medical bills? if that's the case, try to make much more money through leveraging your knowledge and hardwork, make each other complement.
there are many teacher that says hardwork begets good luck but they never teach about people that did hardwork and still have miserable fate at the end of the day and also those people that tried hard to become rich through entrepreneurship and will still become poor anyway because they keep failing never found success.
the world was never linear, being rich is just simply having a good opportunity at the right time and being the right person and its always like this.
That's what business is about, you leverage things to your advantage to get richer. If you do not have money, you get banks money, if you do not have a skill, you hire someone with that skill, if you do not have shipping, you work with a shipping company, whatever issue you have, you leverage others to do it for you, and if you lack money for it, it goes back to bank situation again.
Any business man knows that after a while you do not "work" at the company, you work to make it bigger, you work to get it higher and more valuable, that's what you aim to achieve in the end but you do not work at the company itself, you are not what makes the company work, if you miss a single day, company should still run very well without an issue.