well...rad is pretty spot on.
If you consider
small business statistics, there's three points in relation to profitability and breakeven calculations;
1. Failure to account. Have you counted all your expenses? If you haven't withdrawn a salary from the business, or properly compensated for the amount of hours you've spent working on your venture - then you may have miscalculated your break even point. Like, if you've spent 100hr on your venture over the last month, and then put $1000 in your pocket - you did make some money, but that's not really profitable, is it?
2. Salary replacement and opportunity costs. When you're working on your venture, how many other opportunities have you sacrificed (i.e. a job with some one else)? These costs have to be accounted, for and they normally aren't.
3. Return on investment. If you're making a 5% annual net profit, then for the amount of risk you're carrying, you would have made more money investing in public equity markets. In other words, the breakeven calculation also has to take into account your cost of capital.
Overall, break even is routinely miscalculated - you can't have a profitable venture if you're not paying your self a salary, or when you're paying your self 10% of the hourly rate that you could get by working somewhere else, or when your business returns you less profit than you would have gotten by giving your money to an investment manager.