If you have a habit of seeing yourself as capable of more than you typically (or ever) do, you’re likely to continue at that lower level of performance because you can take comfort in your elevated self image. By believing that your best isn’t a hypothetical, but just an observation of what you’re doing, you have to accept the lower performance or actually try harder and achieve what you believe you can.

This mindset helps me both push myself in all areas, and be more humble as well.