On World Kindness Day, lots of stories were told about the joys of giving and receiving affection. One was about a colorblind young man named Francis whose college friends pooled their money and bought him a pair of EnChroma glasses so he could see the world in full color for the first time.

Just watching the video of that on YouTube makes you feel so good; imagine how those folks felt.

As wonderful as that moment is, a study published in Personality and Individual Differences suggests that gestures of caring (given and received) don't have to be that grand to boost your psychological well-being, including your sense of purpose and optimism.

What's really important, the researchers say, is noticing the smaller moments that are so often overlooked, but are still touched with kindness. 

And the health benefits of what they're calling "felt love" are well-documented.

Studies show that a sense of purpose may reduce your risk of stroke and dementia, and boost memory and executive functioning as well as helping keep your blood sugar under control.

Research also indicates that optimists have better heart health and live longer than pessimists.

So take time to notice and acknowledge moments of caring such as when a neighbor asks about your health, a colleague thanks you for your work, or your partner shares a quiet moment holding your hand.

In return, offer such small gestures of caring to those you encounter throughout the day. Your heart and mind will thank you for it.