Coming back from a break can make work feel heavier than it actually is. The sudden shift from rest mode to performance mode often creates mental friction, which can feel personal but is usually neurological. For Gen Z navigating unstable early careers, that discomfort can quickly spiral into doubts about purpose or direction. The key difference is duration: if it fades in a few weeks, it was likely just a post-holiday slump. Are you actually burnt out, or is your brain just adjusting back to routine?