The next time someone offers you advice say “thank you” instead of “I know.”
“I know” stops the conversation. It tells the person who offered to help, “You don’t need to help me, I know this already.” I’m sure you didn’t mean your response unkindly or that you weren’t grateful for the proffered help. “I know” is a natural reaction—we’ve been saying it to our parents and teachers since we learned to talk! “Don’t forget your coat, it’s cold outside.” “Yes, Mom, I know.”
“Thank you” gets me at least a smile and often, another helpful comment. It also makes the other person feel appreciated instead of rebuffed. If you’re looking for good ideas, “thank you” is nearly as powerful as asking good questions.
When I can remember to do it—and I don’t every time, just this morning at work I responded “I know” when I should have said “thank you”—I swap the two phrases.