It is so easy to fall into the comparison trap. You can look around and quickly believe you don't have enough. In our culture, attaining more is valued. You will be inundated with advertisements trying to convince you to buy a certain product. People who live in the spotlight will glamorize the many things they own. People around you might unknowingly make you feel like you need more.
But there is an antidote to it all. Live simply, be grateful, and give generously.
The truth is, you are among the wealthiest people to ever live. Even in what might seem like the little we have, we are still among the top 2% of the wealthiest people in the world. You have a God who has graciously allowed you to be born where you were and has graciously given you so many gifts and comforts and luxuries. We've been given so much grace in order to be grace to others. There are people down the street and around the world who are desperately lacking. And we can give abundantly and generously.
Don't believe the lie that you have to have more in order to be able to give. Generosity is a reflection of the heart. Be willing to give your stuff away knowing it is all temporal and that God loves a cheerful giver. Your life will be better for it.
"Do not lay up for yourselves treasures on earth, where moth and rust destroy and where thieves break in and steal, but lay up for yourselves treasures in heaven where neither moth nor rust destroys and where thieves do not break in and steal. For where your treasure is, there your heart will be also."