There is a saying “steal like an artist” and as catchy as it may be, I believe it is misunderstood. We are all the average of the five people we spend the most time around. if you look at artists that spend a lot of time with the ideas of artists that inspire them, then it is easy to see how these inspire similar works from them.
You have to do work at a job, but work doesn’t have to be a job. Personal work can be something you choose to do that furthers you creatively, financially, or otherwise.