This is an ancient and beautiful meditation technique -- and it can be a very good one for people working to make the world a better place. If you don't currently have any kind of spiritual and/or meditation practice, perhaps this  would be a good time to try out the following Loving-Kindness Meditation.

Instructions

Sit in a comfortable position. Let your body relax and allow your mind to begin to be quiet. Then begin to recite inwardly the phrases below directed to yourself. Let the feelings arise with the words. Repeat the phrases again and again, letting the feelings permeate your body and mind. You begin with yourself because without loving yourself it is almost impossible to love others. Practice this meditation repeatedly for a number of weeks until the sense of loving-kindness for yourself grows.

May I be filled with loving-kindness.

May I be well.

May I be peaceful and at ease.

May I be happy.

When you feel ready, you can gradually expand the focus of your loving-kindness to include others.

After yourself, choose a loved one, someone in your life who has truly been there for you. Picture them and carefully recite the same phrases.

After this you can begin gradually to include others: family, friends, co-workers, neighbours, people all over the world, animals, plants, ecosystems, and all begins.

Then you can experiment with including the most challenging people in your life.

 
Eventually, you can use this practice anywhere. You can use it in traffic jams, in airplanes, in the dentist's waiting room, while meeting with your accountant... It will help to calm your life and keep you connected to your heart.