There a lot of songs by Coldplay I love for their lyrics, which helped me a lot during a bad period of my life. Definitely one of my favourite quote is from "What If":
"Every step that you take
could be your biggest mistake,
it could bend or it could break
but that's the risk that you take".
Every time I'm going to take a decision which may hurt someone, or myself, in the future, then I think to this phrase, take a pause and reflect on the consequences of what I'm going to do. Thank you Coldplay!