We're all looking for meaning in our lives. Often that meaning can come from the smallest action and you won't even know it's happened.
Standing in a check out line at a supermarket, as I had a lot of shopping I allowed a young Arabic man to go first. He only had two packets of noodle soup to last him for the whole week. Such a small gesture to him became a great kindness and I knew this had changed the way he viewed Western people. One small act had stopped one man at least becoming radicalised.
Practice random acts of kindness as your purpose in life.