No one should stop learning. Imbibing knowledge is what makes you a better person. You can always find different sources to feed your brain. And if you're a freelance writer? One of those places is the Freelance Writers Den. Which just happens to be open for membership for a few more days.
It takes bravery to let outsiders handle your writing. However, the feedback you receive is valuable. One of the best resources writers have available is workshops. You get the feedback from a number of people with different backgrounds in one place (some more useful than others, but that's the risk you take).