If you can do anything but write, do that other thing. But if you really can't stop, then slow it, control it, and make sure you're the one in control of how your craft influences your life.
Don't ever shy away from a critique, don't ever shy away from giving an honest critique either. Ultimately, all aspects of life comes with highs and lows, so by avoiding the negative, you're living in a bubble. Learn from it.