I need more clarification on how art answers a problem.

I know that art can be edifying and can meet a need for an individual of what they enjoy looking at. And it is truly different strokes for different folks. In narrowing my work, I need more understanding of how art can solve a problem, as well as who the market is for that solution. In the past, it has been a hit-or-miss-match of what is presented, where, when and to the number and type of people that attend a show or event. Thankfully, it has worked more often than not, but I would like to get more specific in my approach as well as in marketing my work. Thank you for helping me get this.