Avoid being an early adopter of new technology despite everyone on HN raving about it. Instead focus on solving actual business needs that grow revenue or profit margins.
That isn't to say, write code fast, even if its garbage. Good clean code is still a virtue. I feel like sometimes people conflate the two. So to add on, don't do that!
With that said, I don't usually invest time on new stuff unless it looks absolutely convincing.