you know there is such a wise saying from a smart person: "I have never met a person in my life who would not teach me anything" That is, every person who comes across to us on the way is able to teach us what (trust, love, not be naive and so Further)
A great poem with a deep meaning
Good should be with your fists, you need to help good people and do not wait for anything in return, in that case your karma will return your kindness to you - say this is the fundamental law of the universe.
Thank you, and I wish you the best of luck on your journey.