The positivity within is reflected in sweetness in the words.

Things do not always go the way we want them to.If we allow ourselves to get influenced by the situation, it is reflected in our words, which tend to become bitter. But if we are able to maintain our positivity even in negative situations, there will be sweetness in our words. 
When we have faced with a difficult situation, our effort should be to maintain the positivity in our mind. 
For this we must remind ourselves that each and every moment is worth a lot, which we must be able to enjoy. We must have the joy of being alive and happy. When we will be able to do this, there will be sweetness in our words.