Ahh, reminds me of the story from the book "Think & Grow Rich" by Napoleon Hill ... Long story short: Gold minder finds gold vein, buys equipment, gets to break-even but then goldvein stops giving. He sells equipment and goes away, the person who bought the equipment hired a professional to see if the gold vein should be somewhere there.. and yes! He became rich.
The guy that sold his spot failed because he quitted too soon! (Afterwards, he still got succesfull though in something different)
I've heard long time ago about money: 90% is psychology 10% is mechanics. Just keep going and you will get it