Robert Olstein, a respected value investor, likely means that the constant pressure to achieve short-term results can consistently hinder one's ability to perform well over the long term.
Here's a breakdown:
Olstein advocates a more patient and disciplined approach to investing or any endeavor. Instead of solely being driven by short-term performance metrics, one should build a solid foundation for long-term success, which often requires patience, thorough research, and a willingness to endure short-term fluctuations.