This quote has helped me a lot of over the past few months. It's hard for me sometimes to let go of something that other people do and it makes me so angry, but then I remember this quote: " Take a deep breath. It's just a bad day, not a bad life.
I think the point is that you are content in every aspect of life. Change isn't necessarily a bad or good thing, sometimes it happens and sometimes its needed. Regardless, be thankful for where you are at.