A very efficient way to find peace and serenity in stressful or painful situations is to consciously practice gratitude.
By focussing on all the things we are blessed with we take our attention of what hurts us. It really works.
On her deathbed I asked my Mom if she had any last words she wanted to share. I could see her thinking really hard for about a minute and she said: be grateful for what you have and not what you do not. So true!