Be happy and kind whilst incarnate.
Always smile in your knowledge of the greater reality. Say good morning, reply in a positive manner, open the door for the person behind you, let the other person have the parking spot, or pull out into the que before you. Provide help to those who need it, help the old person across the road. Make a habit of being kind and doing “good” things.
These small things increase your own frequencies as well as those around you. In doing these small things you decrease you opportunity of accruing the lower frequencies associated with Karma, not only for you but everyone else – which in itself is a great kindness and an even greater service.