Fast-paced work environment. Constantly changing and the need to evolve your product knowledge (seemingly monthly) Managers will add and remove accounts to your book of business, which can hamper your ability to gain a promotion (not maliciously, but some middle-managers are very unorganized). Adding an account = higher KPI targets for a promotion. I got gypped out of a promotion because my manager added a large account to my book 1 week before quarter end, inflating my quarterly quota by $60,000 in rev. Long hours.