In 2008 I spent $7000 that I had made off consulting and 8 months of my free time to build my first project. It was a miserable failure. I've made about $80 off of it, so I'm still down about $6920... 3 years later.
In 2009 I built my second attempt. This time I spent about $1000 building it and it took me about 4 months to build it. I've made about $150 off that one, so I still lost money, but much less than the first time.
In 2010 I made my third attempt. This one I built at no cost, and 2 weeks of my free time. To date this one has made over $20,000.
I'm now in the 5th year since I first started on this journey and for the first time, I wrote myself a profit check last month.
Hang in there. You'll figure it out if you keep trying.