People choose different types of career for different types of reasons. Some choose a career because they have a special talent for that career field. Some on the other hand choose a career in which they have interest and they would like to train and develop themselves to be successful in that career. Some garner the knowledge required for a specific career field and then start out from the entry level to make it actually big in that chosen field. What remains common in all these cases is the fact that people get selective about their careers and they have different aspects on which they base their choice.