“Be happy for the things you have that you need, instead of being sad for what you wanted.”
You cannot always get what you want, nor be ignorant of what you have. The basic necessities should be prioritized first instead of the childish wants you think you require the most. We sometimes take what we have for granted and cry and grumble over things that we can live without. For instance, a child should be happy for getting the fulfillment of what he always needs instead he is crying because his iPad is too out dated and he wants a new one.