Stuttering is one of the most frustrating, embarrassing, depressing things on the planet brother. I know how you feel. I've been at my job for a little over a year now and did real well my first year. For whatever reason, my speech has gone to shit the past week. You ever get in those slumps? Man, they're hard to break out of. Just keep working your ass off and keep a smile on your face. You can do it! You got the job for a reason and they picked you for a reason. Don't even think about quitting. That's the easy way out. I have faith in you.