Let's take authors as one example. I've said many times that becoming an author is a marathon, not a sprint. It will take time for your readership to build and for your work to get enough recognition, especially if you opt for the self-publishing route. This is where you have to really think about what else you're passionate about, aside from writing. Maybe you have an interest in history, so you might look for a job in a museum. Whatever you are interested in, having a second source of income will be a huge benefit during those first tricky months and years.
Keeping your options open can also apply to your projects or current works-in-progress. It can be very tempting to experiment with different styles, techniques or genres. And that's perfectly alright. As long as you are following your heart, and you believe in your work, success will come.
Stephen King is a good example of this. We are all familiar with classics such as The Shining and 'Salem's Lot, but King recently ventured into the world of crime thriller writing, not something you immediately associate with the great supernatural writer. However, his 2014 release, Mr Mercedes, was awarded America's top crime award, the Edgar, in April of this year, beating off competition from the likes of Ian Rankin and Karen Slaughter who are both proven crime authors. This goes to show that a little experimentation here and there can yield some truly remarkable results.
Keep this in mind if you're setting up a creative business of some kind. Having multiple products or services available will widen your audience and give you a host of different skills. Yes you might market yourself primarily as an artist or photographer, but why not offer short photography courses alongside your work? Not only will this be another way of earning money, but you can also build more of an audience this way.
Above all, do what you enjoy. Take pride in what you do and stay confident. Success is in your grasp.