Romans 12:11 Do not be slothful in zeal, be fervent in spirit, serve the Lord.
When doing good for others, we shouldn’t be doing it out of some sense of obligation or the idea that we’ll gain standing with God if we do good works. The same is true of when we serve the Lord. It should be a joy to serve others if we are really doing it with the right motives.
If we say that we’re serving God, but we complain or grumble about what we’re doing, then we don’t exactly come across as serving out of joy. What message does that send to those who are watching? This doesn’t mean to put on a fake smile either. If you’re serving out of obligation and have no real joy or zeal in doing it; what are you left to do?
Search your heart. Pray that God would convict you where you’re lacking in ferver that He might ignite a fire in you to do good. Study the Scriptures, seek God’s will, lay aside your own pride and approach Him with a humble heart. You’ll find that joy will come as you serve if you do it with the right motivation and with the help of the Holy Spirit.