Pride is condemned in the Bible. There is no where in the Bible where pride is encouraged. I recommend telling your child, for example, "I am pleased with you and I am grateful to the Lord for you."
There is no Biblical concept of "self-worth" or "self-esteem" or "positive self-image". Often, Christians who know that psychology's self-esteem is corrupt will try to give a Biblical answer and say, "you must find your self-esteem and self-worth in Christ".
They don't realize that they are STILL giving a worldly, unbiblical answer. The only reason Christians are conditioned to speak like that at all, in these days, is because of the influence of humanistic psychology.
Our calling and our hope in the Bible is not based on any form of positive self-image or esteeming our selves. We are not called to help people gain "self confidence". It is all about Jesus. Realizing that I am hopelessly lost without Jesus and that it is His righteousness that is my hope. Jesus loves me. My future depends on trusting and obeying Him. Fixing my eyes on Him, not finding worth or confidence in my self.
The world is obsessed with Self and focuses on "My Value", my self-worth, my self-esteem. It was Humanistic Psychology that popularized a concept that originated with the Serpent's lie in the Garden of Eden. These same deceptions from the world have now pervaded Evangelicalism.
And yet the respected Bible teachers of the previous centuries never emphasized our "value to God". More importantly the Bible does not emphasize our value to God. Rather God's word teaches that we were hopelessly lost and separated from Him because of our self-centeredness and rebellion. Not only did God not need us, we were "worms" in a sense, we were worthy of eternal hell.
And yet God loves us and He became one of us and died in our place. We did not deserve it, our value did not require it. But as the song goes, "When I was worthless, Lord, you bought me"! Glory to God! He alone is worthy!
Some will point to Matthew 6:26 or Luke 12:24:
"Consider the ravens: for they neither sow nor reap; which neither have storehouse nor barn; and God feedeth them: how much more are ye better than the fowls?" Luke 12:24
Newer translations use the term "value". But the
emphasis here is not how much "better" than the birds or the flowers we
are; it is not emphasizing our "value". These verses are about God's
love for us! That our Lord Jesus can be trusted! It's teaching us about
the Lord not our "Self"!