its not that having a positive or abundance mindset is necessary to achieve outsized gains more so that your body and mind have an incredibly difficult time operating on a neutral plane of existence if you are not positive, then you will gravitate towards negativity if you are not negative, you will by default, be positive if you are by default positive, your brain will be quicker to sense and look for opportunities to make things even more positive, because that is your brains native language if you are always negative you will doubt, and be scared until its too late, and your body tells you that it is finally safe, that the crowd has accepted this concept or idea or asset if its not scary its not good enough