Sadness and Joy, same stick but different ends. That's why it's so confusing at times. I try to stand more on the joy side, so when sadness starts pulling at me, it only gets me to the middle of the stick  before Love starts to pull me back to joy.
Yes I want to know the whys of it. I want to understand it. But time has control of it, so I have  to wait. Those feeling, emotion, thoughts, ect from sadness are still there but I don't make camp with them or in them. I keep focus and aware of the good. Deep breath, a smile and  forgiving of self...then move on. Standing in the present, feeling Grateful and Blessed!!
Have a Great rest of the night.
Much Love and Big Smiles.
CCJ