From The Secret Teachings:
If you find yourself in a negative situation with someone in your life, take a few minutes each day to feel love within your heart for that person, and then send it out into the Universe. Just doing this one thing helps to remove any resentment, anger, or negativity towards that person.
Remember that feeling resentment, anger, or any negative emotion attracts it back to you. Feeling love attracts love back to you. What you are feeling for another, you are bringing to you.
It is so easy for me to apply this on a daily basis. I’m sure the same goes for you. 🙂