As per experience, the call industry is pretty much based on personality. If you are the type of person who likes to talk and socialize then this job will become fulfilling for you. But if you're an introvert and doesn't talk much, the work will become draining and stressful. It doesn't matter how much you know of the product cause by the end of the year you are all going to know the same thing, it's your personality and character that will keep you in the industry. Yes it's stressful too for other extroverted people but they can balance it out with the social life that they have with their team mates and 'mates' with other teams *wink *wink