Matthew 6:34

Therefore do not worry about tomorrow, for tomorrow will worry about itself. Sufficient for the day is its own trouble.

Romans 12:11-12

Never be lacking in zeal, be fervent in spirit, serving the Lord.

Philippians 4:4-5

Rejoice in the Lord always; again I will say, Rejoice!

Treasury of Scripture Knowledge

Summary

Wherefore I perceive that there is nothing better, than that a man should rejoice in his own works; for that is his portion: for who shall bring him to see what shall be after him?

Bible References

Nothing

Romans 12:11
Never be lacking in zeal, be fervent in spirit, serving the Lord.
Philippians 4:4
Rejoice in the Lord always; again I will say, Rejoice!

Who

Matthew 6:34
Therefore do not worry about tomorrow, for tomorrow will worry about itself. Sufficient for the day is its own trouble.