Proverbs 22:6 "Train up your child in the way he should go and when he is old, he will not depart from it."
This word, way, in the original Hebrew is "derech." Literally it means the "trodden road" and used figuratively is the "course of life."
So, when I read this verse, I am not thinking the traditional (and misleading) teaching, that it refers to salvation. It could refer to living a Christian life. But I believe it is talking about more than that.
The Kingdom of God requires us to view all of life as sanctified. That is, set apart for the Lord's service. Does that mean that all must be in "professional" ministry? NO! It means that whatever you do, do it to the glory of God (1 Cor. 10:31).
Have you ever taken one of those spiritual gifting tests? I have, several. I always score very high under teacher, followed by "perceiving". Does God mean for us to use these spiritual gifts only at church? Are they things that are deposited only after we are filled with the Holy Spirit? Or does God know everyone from the moment of conception. Did He create the inward parts from the very beginning? How many non-Christians do you know about whom you say to your self, "If only they were a Christian, what good they could do for the Kingdom with that drive, that passion, etc."?
I believe that God has gifted every single person in the world. And that once filled with His Spirit, those giftings become supernaturally charged to do great things. That is the Greek (NT) definition of grace (empowered), by the way.
Finding out your own giftings is fun, helpful even. But if you are a parent, it is your duty to find out the giftings of your children. Only then, can you truly carry out the proverb to "train up your child."