It's often said that happiness is achieved once passion collides with skill. In other words, people thrive when they're doing the things they love. Naturally, getting paid to do those things is what many people consider a dream life. Unfortunately, most people consider such a life just that: an unobtainable dream.That doesn't have to be the case, though. Many hobbies and passions can -- and do -- lead to lucrative careers and fulfilling lives.