Don't tag your emotions as good or bad. When your heart opens up tears come, it's natural. Let it be. The most wonderful thing on planet earth is to have tears of love, tears of gratitude. This indicates that your life is glorious, rich and fulfilled. Fulfillment in life is when you have tears of gratitude and it comes by luck. You can't manufacture tears of gratitude. When you realize what all you have received in life, your heart just opens up - Sri Sri