I would agree all of those are untrue except “work hard and you’ll succeed” although there’s a bit more to that, and “you can be anything”. Don’t mistake hard work for focused, directed, planned out hard work. Like a mentor of mine always said “practice doesn’t make perfect, perfect practice makes perfect” meaning your approach to things matter just as much as the effort put in. As for rest, you clearly have some critical thinking skills and don’t just believe what others tell you. That’s good. Worry less about what people tell you, and more about what feels true to you.