When you know yourself, the rest will follow. The opposite, unfortunately, is not true.
Getting to know your strenghts and your limits, what triggers you and what motivates you, what really matters and what you can let go. Having the capacity to adapt to your own mood, understanding that today it is simply not the day, that right now is the moment to push, that your getting mad yesteday is because of the lack of sleep. Not beating yourself up while still holding yourself accountable.
There is no better investment than the time you spend getting to know yourself.