A common complaint from artists is that they don't have enough time to create, and support themselves. Its a frustration that stems from the expectation that they have a right to make money from their art.
Our society has perpetuated the belief that our "career" is something that pays the bills, and everything else is a hobby. While career in the accepted sense denotes expertise, hobby is thus for the amateur. Therefore to be a successful musician, you must be making the majority of your money from music.
Consider Einstein's story for perspective. He wrote most of his influential early work while employed as a clerk in a patent office. Einstein didn't use time as an excuse to not write - he had the determination to create because he was driven by his desire to understand the universe, to develop ideas, to solve problems. His intention was strong enough to reward him and keep him moving forward. And although his "career" was as a clerk, he was still very much a scientist.
You define what success is for your art - and the only barrier to that is any belief that you hold that stops you from delivering. The driver is your intention - if you're struggling with barriers, look at your reasons for creating in the first place. Time and money are not variables that are beyond anyone's control.