What is the most meaningful or impactful experience you have had with a personal relationship and why was it significant?

I had a meaningful experience with my best friend when I was going through a really tough time. We had been friends for years and she knew exactly what to say and do to help me out. She was like a lighthouse in the middle of a storm, guiding me back to safety. It meant so much to me because it showed how much she cared about me and that she was willing to be there for me no matter what.