I'm so sorry you're suffering from this job. You are not alone. If you need the money I would not recommend quitting a job before you have found another. Cashing in the 401K usually results in about a 40% tax so not really worth it. I know exactly how you feel. I worked on a Job for 7 years and the stress was killing me. I cried all the time. I decided to start devoting at least 2 hours per day looking online for jobs. Just doing that seemed to bring relief. Took me 3 months but I now have a better position, higher salary and my commute is shorter. You can do it!