Amount to a hill of beans

Amount to a hill of beans = to be of little importance.

Example - "You are making yourself miserable over something that amounts to a hill of beans"

Image - http://3.bp.blogspot.com/-3-G1c-C2XRc/TgJgDCCfVdI/AAAAAAAAAKM/wRGjEqCeqCQ/s1600/HillOfBeans.gif