Life experience makes you humble, and being humble gives you good karma :) When we go through the journey of life, it gives us more humility and builds our character. We realize we don't know everything. When you're young, you think you know it all, sadly.
Life experience is good
Because we become more humble, we become kinder, and that will have good karmic ripples for us. As we go through life, we learn and grow, and just overall become better people. That is a great thing indeed!