Never useless
"My dear brothers and sisters, be strong and immovable. Always work enthusiastically for the Lord, for you know that nothing you do for the Lord is ever useless." -- 1 Corinthians 15:58
An abundant life is a life that has meaning and purpose. God knows that is what you want. You don’t want to simply watch the days and years go by, collecting a few more things, going a few more places, and saving a few more dollars, with no sense that it matters for eternity.
As you earn and invest money in Kingdom endeavors, you store up treasure that will last forever. God sees you serve in ways that no one ever esteems or notices. God sees the extra care you invest in your efforts because you work as if you are working directly for Him. God sees the integrity you show when no one would know otherwise. And He will be blessing your life with a satisfying sense of purpose.
When I think I am wasting my time and effort, I look to you, Lord, confident that you will not let my labor for you go to waste . . .