...many ruts are filled with perfectly decent work that just happens to collectively represent an uninspired collection of average.
Your career is filled with innumerable opportunities to get stuck in a rut.
Mix it up. Experiment a bit. Expect more from yourself. Most importantly, embrace feedback and actually use it.
Hint: if you feel as though you are stuck in a rut, you are almost certainly stuck in a rut. Try something different, but - this is the hugely important part - actually pay attention to how others react.