It was easy for me in my bathrobe to provide really great customer service. As an introvert, it's really much easier to do than when standing in a retail store.
A great mantra to have, whether you're breaking up with your boyfriend or you lose your job, or something changes that you didn't anticipate - which is a fact of life, and very much a fact of running a business - is: 'I was OK before this, I will be OK after this.'
If you knew what you wanted to be when you were 6 years old - great! If you have no idea what you want to be, that's OK!