Touched.

It's that feeling. The feeling of having your needs unexpectedly met. Having your life unexpectedly touched. I haven't had that in a while. I haven't done that to others in a while.

I want to write down just in case I forget it again.

The ones that are most impactful are those where the giver doesn't even realize the degree of the impact they have left behind. It is a genuine response to someone's needs, usually an unspoken one. It takes a fleeting moment of selfless-ness and freedom from self-consciousness, where all you can think about is how to best help someone in need, without even taking the time to consider what it might cost you, or how it would benefit you - you wouldn't even think about you. It would usually seem effortless to you, like responding in kindness to someone who is in a bad mood, not knowing that he/she have had a really bad day, and that kind response was all it took to make it feel better. 

All these thoughts came from a warm hug from my mother and an offer from my sister to teach me, while I was panicking in the midst of studying. They might not even remember what they have done... but I do.