I confess I show a warm, generous face in public but I am impatient and sharp with my own wife and children at home. How do I close this gap?
The gap you describe is real, and it is far more common than you would guess. You have named it, and that is where any repair has to begin. So let us look at where it comes from and how it closes.
Outside the home we are being watched. There is regard to keep, and so the temper stays in hand. At home there is no audience, no one keeping score, and by evening the tiredness wants its share. What comes out at home, then, is closer to the untrained self. Our Prophet placed the measure of a man exactly there.
“The best of you is the one who is best to his family, and I am the best of you to my family.”
The Prophet (peace be upon him), Jami’ at-Tirmidhi (3895) · meaning
Greatness in Islam is not weighed in the marketplace but at the dinner table, in the tone we use with the people who cannot walk away from us. And where sharpness rises, especially in the tired hour, he changed what strength even means.
“The strong one is not the good wrestler; the strong one is he who controls himself at the time of anger.”
The Prophet (peace be upon him), Sahih al-Bukhari and Sahih Muslim (Bukhari 6114 / Muslim 2609) · meaning
So the self-control you already show to clients and strangers is not something you lack. You have it. It only needs turning homeward, where it is needed most and rewarded most. Each time the heat rises and you hold your tongue instead, that is the stronger man acting, not the weaker one.
And this is not only a matter of manners. Allah has put the household in our hands as a trust.
“O you who believe, protect yourselves and your families from a Fire whose fuel is people and stones.”
Qur’an, At-Tahrim 66:6 · meaning
Guarding a family begins with the way we speak to them. A harsh house hardens the hearts inside it; a gentle house sinks the roots of faith deeper. Closing this gap is part of your worship, not a detour from it.
Make the change small and steady. Pause for a breath at the threshold before you enter and let the day’s weight drop from your shoulders, so that the man who walks in is the same one your colleagues met at noon. Your family should not be given whatever patience is left over after everyone else has taken their share.
One small step: Tonight, before you walk through your own door, stop for three slow breaths and settle it in your heart that your family will get the best of your face, then greet the first person you see with a smile and a soft word.