Kindness also means taking time to be with, and really listen, to our families incl children and young people. It includes taking time to offer praise and acknowledgement - not just for getting good grades but for other things as well, incl showing empathy to or for others. The consequences of that praise and acknowledgement can foster further empathy, and more progress towards a kinder world.
On a related note, we need to remember to be respectful and kind in how we talk to ourselves e.g. to take time to acknowledge "you handled that well" or "you you were patient with X".