Emotions are a very strong part of our life, Emotions are like a feeling,
Happiness is feeling, sadness is feeling, sorrow is also feeling, yeah my friend we always should think positive.
If you are sad and sadness is telling you to do something wrong, start to think positively because there is happiness after sadness and there is sadness after happiness, it a circle, so don't get too much sad or don't get too much happy, Keep balance in all those feelings.
Have a good day!