25 years
If you have been married 25 years or longer, you should not expect that the decision to divorce your spouse will end your emotional pain.
Your decision, once you finally make it, will feel like your decades of problems have been lifted off of your shoulders, but please expect to have proper sadness and grieving in the months, possibly years to come. If you understand that it is an emotionally painful process, a sad process that one should grieve, then when you have these feelings they will be less debilitating in your day to day life, and finally, one day a smile will emerge andyou will hopefully hear yourself laughting again. It will take you by surprize.
It is okay to cry and then it is okay to smile.