If you're an ambitious person, you'll inevitably hit a wall. Sounds pessimistic, but it's actually a sign you're doing something right. At points throughout your career, you're guaranteed to feel overwhelmed, burned out, uncertain, and defeated. You're the kind of person who takes on as much as you can in any given role — so it's not surprising people keep giving you new things to do, new problems to solve. Whether you get to move up, however, depends on what you do next.
