<em>"Do not take life too seriously. You will never get out of it alive."</em>
Taking life too seriously leads to being stressed out, scared, and causes a lot of anxiety to one's health. Being able to laugh at life, being relaxed, and accepting the way things are or happen to become is a much better gig. Having daily goals, letting go of past grudges is the best way to live. Living in the present is healthier and learning from past mistakes makes one a better human being.
The boy influences the crystal merchant by following his or her dreams the boy is even teaching him andalusia and sheperding, notice how he also tells the merchant take a chance and seize the opportunity.