Having his own slight trouble with anxiety and other mental health stuff (or just knowing about it), Sebastian is extremely understanding of any child who tells him that they have (for example) depression.
And he makes sure to make home a safe place for them, as well as have signals for when things get bad.
Basically, Sebastian understands and knows how to handle his kid's mental health in a good way is what I'm trying to explain with eighty-one words.
