Educate children to learn to be grateful, and let them regard gratitude as a habit in what they see and hear.

Be grateful for the things around you.

Parents can use some common things around them to guide their children to be grateful with practical actions.

Thank you, friends.

Parents teach their children to thank their friends and let them learn to appreciate their support.

Learn to be grateful in comparison.

Let children learn to be grateful in comparison, take them to orphanages or hospitals for the disabled, and let them experience things that they didn't know before, didn't care about and therefore won't cherish in comparison.