In closing, I would just like to assure you that you are not and cannot screw it up. Do the best you can, from the best intentions you can muster.
If you like, think of every interaction you have all day as a service. Sure, you will forget after the first few encounters, but you will remember in an hour, or maybe two days from now and then begin again. As you practice and mature you see the beauty in the unwieldy nature of all things and life.
Combining the nature of things with responsibility and acceptance makes responding to all situations an impossible task. So, the adoption of universal practices like chanting, meditation, tonglen and prayer become both practical and beneficial practices.
Many would argue that this is all that is required, however that is a monastic traditionalist stance that I see as partial. There is no shortage of teachings to support the need to be engaged in the world, not to mention, in the time we live, the necessity.
Whether it is Ordinary Mind and returning to the market place of Zen or Tibetan Vajrayana or Buddhist Bodhisattva Activity or the Christian ‘Be in the world, not of the World’; all paths lead to the same end.
Hopefully, the framework of Five Ways to Work with Other People’s Karma makes your path and everyday interactions with others more workable and enjoyable.
Be kind to yourself and May your life go well — Enō
I know all the details of karma,
but I do not really believe in it.
I have heard a lot of Dharma,
but never put it into practice.
Bless me and dark-doers like me,
that our minds may mingle with the Dharma
— Patrul Rinpoche