What, not When

George Bernard Shaw was 94 when one of his plays was first produced. Mozart was just seven when his first composition was published. Both of these men accomplished significant things at different points in their lives. We are left with the benefit of the results. The age at which these things were accomplished is not that significant.
Jesus told a parable, recorded in Matthew 20, about a landowner who hired workers from the beginning of the day until just one hour before quitting time. Each worker pleased the landowner. Each worker received the same pay. But some, until they had received word of the work to be done, stood idle in the marketplace. No one had come to hire them. No one had asked them to make a contribution.
But when they were asked, they did their part. Their efforts gained them a place in the vineyard of the master.
Let us not stand idle, but get to work. No matter how late in the day it might be, the land owner is still hiring.

"And let us not grow weary while doing good, for in due season we shall reap if we do not lose heart." (Galatians 6:9)