The easiest way I’ve found is trying to stimulate the emotional chills with the activities that produce them the most, then as you’re experiencing them, close your eyes and focus on the sensation till you can prolong it by reverberating it up and down your spine and through your skull. Then, when you want to reinforce a positive behavior focus on what you were able to do in your meditation with an organic sensation, and it will return to emotionally reinforce the positive behaviors. Keep practicing, it’s a skill you can use your whole life.