I think to define level of success is very personal. For me, I'm a stay at home mom, so the fact that I'm able to get any work done in a day is considered a success!
I personally consider my shop a success, as I am selling on other venues which are doing much better than my Etsy venue. My plan is to be able to work full time once my youngest is in school.
Being considered a success is very subjective because we all have different goals. Love your shop by the way!