I have learned that others know much more than me about so many things, but I too have knowledge to share. I've learned to trust myself and not to defer all the time.
I've learned to listen - that was a difficult lesson for me. I think I'm still learning to control some .... arrogant tendencies? I've learned that almost all people have something good to offer, there are relatively few 'wicked' people.
I've learned that we all make our own way in life and that the journey can in fact be the destination. I'm happy to share that journey with like minded souls and those who will disagree with me.
After 35 years I learned that I am not a religious man and never should have been but I have also learned that so many religious people are the ones I view as friends. I've learned that it's okay for me to view faith as a weakness but I've also learned to respect my friends who see it as essential.
I've learned that I don't need god. I've always known that I need love.