Stories are an effective way to share values and beliefs.  I used to say to my children, ‘you should have done this, or been grateful for that….’ In other words, I was telling them what they should do, how they should feel.  It’s immeasurably more effective, and I can attest to this first-hand, that if you share your value/wishes in a story about an event that happened to you and how you handled it and what you learned from it….their behavior will change in the direction you want.  But, the change will be more permanent because it wasn’t an instruction but motivated by a story they felt emotionally connected to.