This is one of the spiritual tools I use often:
If there's someone in your past/present you feel very negatively about, you write that person a letter - doesn't have to be on fancy letterhead or with a nice pen. You allow all the words you really want to say to flow through your hand and onto the paper, no censorship, no worries about grammar or spelling. You JUST WRITE, and vent your spleen onto the paper. Then you take the letter and place it into an envelope. You can address the envelope if you wish. Then (and this is the important part) you Destroy the Letter, either by burning it or by ripping it into little pieces. You have spoken your truth and you have let that person go.
I don't remember where I saw this, but I tried it...and it SO works. It gives me a safe place to Speak My Truth and be heard. Then I burn the letters when I am ready to release them, and I can release the toxic emotion that I've been carrying within me. :-D
I found myself needing to write an Unsent Letter to S., my former co-worker. I intended only to write one letter - I wound up writing *four* letters, and only two of them were to (former) co-workers. The other two were for people I needed to speak my truth to in other areas to my life.
Some interesting things came up during and after I wrote those letters:
~I found myself encountering what I call "Light Worker's Ego" - that is, "I know what you can do to improve your life! Why aren't you taking my advise?" I flow with Compassion and want to help, but sometimes I need more Compassion to allow the other people simply to BE.
~I also realized: Just as S. was an excellent mirror of my Shadows, simply by being herself, I can be an excellent mirror to another's Shadows, simply by being my*self.
I'm still sitting with these things...