That scripture you quote from 2 Corint 12:9 is such an amazing scripture. It speaks of the power of God made whole in our weakness.
True, if only we accepted our weaknesses we could turn each of them into strengths.
When you talk about your children I am reminded of Thomas Alva Edison, no one believed in him except his mother.
Schools threw him out and his mother faith in him helped him became the greatest inventor of our times.
I am sure you will help your children see their true value.