Romans 12:18

If it is possible, as far as it depends on you, live at peace with everyone.

To have peace in your relationships, you will need to be willing to be flexible. Hurting and offending others is usually brought by being Self-Centered. Wanting others what you want is not good at all times. Encouraging yourself to ‘live at peace with everyone, will fill your relationships with His joy and peace.Learn to be flexible by being unselfish.

source:

http://rcfkids.wordpress.com/page/11/

https://www.youversion.com/ro/reading-plans/199-promises-for-your-everyday-life?version=112