50/50 positive/negative

Hi Brooke! On your podcast, I hear you mention the fact that life is 50/50 positive and negative, but I’ve never heard you dig into how you came to believe this. This belief is actually something that I grew up believing because my dad told me this (thank you, dad!) but I’ve never been able to get much of an explanation from him as to why. Can you share how you came to believe that life is 50/50? My mind still wants to argue with it sometimes, and I feel like understanding more will help me accept it unconditionally. Thank you!