Two things define you:
1. Your gratitude when you have nothing;
2. Your attitude when you have everything.
It's not easy to be thankful when there is little to be thankful for. It's easy to have a pity party or yell at God or think it's not fair. It's a lot harder to look past momentary troubles to see the blessings in our lives and to thank God for all we have.
Likewise, when we have plenty, it's easy to become complacent and cocky. Full of ourselves. I think God likes us to have what we need and more, but He expects us to be grateful and use His gifts to further His kingdom.