Ps 35:27
…may they always say, “The LORD be exalted,
who delights in the well-being of his servant.

When we serve God is delighted. I don’t think it is the magnitude of what we do as much as it is we are just doing something. Christians are held back if they sit around and wait for God to tell them what to do in service. If you can’t think of anything start simple. Fill a cooler up with ice and bottled water and hand it out to people who are panhandling. Everybody can use some cool water. (Matthew 10:42)

Pray for incentive from God to get serving.