I feel your pain, I'm 19 and have been trying different stuff for a few years without a ton of external reward. My insides have grown exponentially, and my physical and mental capabilities are much more than what they used to be.
I feel that this is a strong foundation for what is to come, and I can already see an upward change in my life in terms of money, health, relationships etc because of my changed point of view.
It would make no sense to give up on trying to make it work, seeing you're already enlightened by the material.
Keep up the hard work, and explain the things you've done more specifically. Maybe there's no passion behind your work? Maybe there's a fatal flaw you've been missing? We're a community, here to help one another. We'll be happy to see how we can work together to get where we want to be.