I'm afraid to be crabby

I have this new job. Its great - although I'm still in the training session and my brain feels like its on overload and I wonder why I can't memorize 8 hours worth of talking everyday. But its great - partly because of all the nice people I work with.

Nice as defined above doesn't just mean "good" people. I am talking super happy, energetic, uber helpful, always smiling people.

Bottom line: I'm scared of being crabby at work. When i'm crabby, I usually don't want to be cheered up. I want to wallow for awhile and eventually I come around. However, I fear these "nice" people will try to come at ever angle in the cheering up department.

Conclusion: I must never be crabby at work! Oh Lord, help me!