Is it youth or my disposition?

[Emily Wanderer]

Lately I have been having a grueling time of getting my thoughts across to people, even those close to me. I have been especially angsty about a new job I started about a month ago, at which they have told me on more than one occassion that I should be more "talkative and bubbly" to customers. I like interacting with people, but sometimes I feel that plastering a big toothy smile accross my face would just be fake and facecious. I have been getting more comfortable at work as I learn the ropes, but have been experiencing some mood swings after going home. I just wonder if it's my youth (being a bit off in my own world I suppose) or my quiet disposition. I'm just not used to having to crack jokes on command, and be overly grateful to people who can be pushy and/or rude.