Dont stress man. I know in the moment it feels like crap. If it makes you feel any better, I didnt follow through with this job I posted about because they didnt work with my negotiations and I trust that in the big picture this wasnt meant for me either. Us stutterers tend to be idealists because we live most of our life in our heads and thoughts. What you believed to have been the perfect opportunity may have been really shitty. Your boss or coworkers could have been total shit bags and the work itself may not have been what you thought it out to be. Take some time to chill and get back at it. If it helps we can connect elsewhere and keep each other posted on our progress.