I have always thought that sometimes it is the small things that make the biggest impact.
You never know what the other persons life may be like.
A smile, help paying for something when the person at the register in front of you is counting out change to pay. Stopping to help when you see someone stuck at the side of the road ( of course you need to keep yourself safe). Or help to an elderly neighbor. I used to take candy to school on test days and holidays when I was in college. It always made everyone feel better including me. You never know who needs that tiny bit of love and how it will change their day.