"It's not about being the best": This part of the quote suggests that the primary goal should not be achieving absolute perfection or outperforming everyone else. It implies that a healthier perspective is needed.
"It's about being better than you were yesterday": Here, the quote shifts the focus to self-improvement. It encourages individuals to measure their success and growth by comparing their current selves to their past selves. The emphasis is on continuous self-betterment and personal development.
In essence, this quote encourages a mindset of self-improvement and personal growth. It reminds us that the journey to becoming a better version of ourselves is more important than trying to outshine others or striving for perfection, which can often lead to unnecessary stress and competition.