This is not the sort of thing I’d usually do on my own, but we did it in my DBT group and I found it incredibly helpful. This helped me finally put to bed anger I had toward specific individuals who had hurt me in the past, and the anger hasn’t come back weeks later. Give this a try especially if it feels a little silly to you. If starting with yourself is too difficult, start with someone you already love. Gradually work your way up, radiating loving kindness.