I think it is always a good idea to reflect on your relationships and how you communicate with your teammates. Like the article says, communication is tricky. "We must strive to ensure what we say actually goes in, is understood, and elicits change." Giving critical feedback is something that is very difficult to do right, which is why the author suggests to avoid it when possible. Also, we all underestimate the value of (well-done) positive feedback. There is a lot of untapped potential in positive feedback. It is the best way to bring out the best in your teammates, since they will continue to focus on their strengths.