I have found my calling (I think)

I have been pondering this for a while now. I am majoring in Finance as I like working with money and the financial world has always interested me. Yesterday I applied for a bank teller position at a local credit union and I was surprised at how excited I was. I dreamed about the job last night and for me that's saying something as I always dream in story mode (weird but that's something for another post another day). Today I'm thinking yes! I see myself working at a bank and later maybe working with loans and mortgages. Does anybody here have experience in the banking world? How did you choose your career (if you already have)?  I wish it was this easy: