According to Olipop co-founder and CEO Ben Goodwin, there's a tell-tale sign to watch out for. He adds that you have to have "a lot of passion" because when things inevitably get tough, that drive will keep you focused on your mission. Goodwin says that if you're able to bounce back from hardships and enjoy facing challenges head on, you're probably ready to be your own boss. And a lot of people want to avoid those things, logically, because they tend to make life a lot more complicated." Sign up for Smarter by CNBC Make It's new online course, How To Start A Business: For First-Time Founders.