You need to feel free to be yourself. But that doesn’t mean you are off the hook for honing your voice.
All writing is craft, and voice is no different. The starting point is being true to yourself, but all the rest presented in this series can and should be used to make your voice as strong as it can be.
It may be the single greatest struggle for most writers. It won’t happen overnight, but if you pay attention to it and work on it, you will find your writer’s voice.