Can I just write?

I am restarting my novel writing journey. And with it being Novel Writing Month, I will be writing a good deal more. Before now I tried to average 400 words a day, but now I’ll try to get the 1,667. But my fear is that I will simply cement bad habits along the way. Is it okay for me to just keep writing? I know that in the Sanderson Lectures, he recommends writing 10 novels to get good at it, but is it enough to just write and revise? Or are there more steps I need to take to get my writing to a good level?