When we praise God it is because we are thankful for being saved from certain eternal death. Psalm 116:2 says, Because he turned his ear to me, I will call on him as long as I live. Worship is a thankful response to God. It is not a repayment to Him. An attempt to repay God for salvation is futile and can never be enough. It is a gift and worthy of our praise.
The circumstances of our lives should never dictate our joy. In 1 Thessalonians 5:16-18 Paul says, 16 Be joyful always; 17 pray continually; 18 give thanks in all circumstances, for this is God’s will for you in Christ Jesus. If we are able to obey these three things, we begin to see people around us and the circumstances of our lives in a whole new light. Additionally, when we live life according to God’s plan for our lives, we will find it much easier to be joyful and thankful for all we have.