I created a helpful product that 9 out of 10 users said they would recommend to a friend, with about 1,000 paying customers. I was too shy to market it or advertise it anywhere, though. I got dejected after being declined from YCombinator in Spring of 2007, and on top of that, my dad was laid off that August. I decided to make the program free to focus on a job I started, and I stopped maintaining it soon after.<p>Another is that I got into the iPhone Store beta program in March of 2008 due to this product, and purchased a MacBook Pro to learn Objective-C. I felt it would be correct for me to quit my job right then that March and spend the next few months creating an app to release to millions of iPhone 1G and 2G users while app expectations and competition was very low. I didn't want to deal with the stress and negativity from my dad of quitting my job just six months after starting it, having dealt with that negativity for years. I was also doing some dental work and the job had a $2,000 dental insurance. Instead, I created mockups for the company I worked for that were shown to the COO/CIO, thinking I could maybe get a bonus money. Instead, my manager was promoted. I applied to UMass that same March in case I wanted to go back to school in September, which is what ended up happening; the idea being that college was a good place to find a co-founder. Although I ended up winning one of the two entrepreneurship competitions here, the overall feel of a state school is to get a job, not do something entrepreneurial.<p>I'm about to make a third business mistake: trying to get into the grad school so I can continue working on the front-end of a rails app I'm already doing undergrad research with right now.<p>The problem with being a single founder is that there are so many people trying to tell you you're wrong, and with increasing intensity, that even if the signs are all positive it can eventually get to you. My customers love my product, and that's actually all that matters according to entrepreneurship logic. But when your parents or others don't see your customers, as well as pretend not to care in order to demotivate you from it, to them, it was like I was just home all the time.