People need to know when to let go of things. Issues and people which are not worth holding, chasing and thinking about.
Life free of stress is a life worth living, but can one be free from it, the best solution is to let go and live amiable life.
By trying to change the things that you can’t change is useless. It only gives the stress in to your life. So don’t try to change the things that you can’t change.