My first job was as a hostess and it helped me to realize that I am way more of a back of the house person than a front of the house person.
In that first job I lasted for about three weeks before the owner gave the option of transferring to the kitchen or being fired. I went to the kitchen and have worked in various kitchens for 15 years now. I just didn't have what it took to be friendly to everyone that came through the door. If I am going to get through my shift I need to be able to scowl.