I like your image of a spiral, instead a line. Anger can be a very useful emotion to give us the energy to do what needs to be done. It's when we stay stuck there that we have problems. I've had several losses this year, and I'm finding myself with flashes of anger, sadness, and gratitude as things happen that remind me of the people who are gone from my life. Eleven years after my cancer diagnosis, I'm still processing feelings even though I mainly accept where I am and value the ways the cancer experience has shaped me and helped me grow. Whatever you are feeling is normal for you, and you can use feelings of both anger and acceptance to make yourself a wiser, more compassionate person.