Right or left?

On my drive home today I saw a sign in front of this church that read: "Give God what's right, not left." For a minute, I pondered that & was like "what" lol... but as I drove, it hit me that this is what a lot of us do: we give God what we feel He should have rather than what's due Him. The Bible says in 2 Corinthians 9:7 that God loves a cheerful giver! Of course when we hear/see this scripture, we immediately think of giving money or tangible things, but what about our time? God doesn't just want us to be cheerful when give our tithes and offerings; He wants us to be cheerful when we give whatever we have to give to Him!