Some people are alone by preference and others are alone because of the choices they have made. In either case, it is agreed that even the loner who prefers isolation to socialization enjoys conversation and friendship from time to time. After all, we are social animals who thrive best when spending time with others.
Let's face it -- we all get sad from time to time; that is part of living but that does not mean we must live in that state for a prolonged period of time. Sadness is felt when things are not going our way and we feel unhappy or discontent. Maybe a past experience or memory triggers sadness and sets you spinning.
"Treat those who are good with goodness, and also treat those who are not good with goodness. Thus goodness is attained. Be honest to those who are honest, and be also honest to those who are not honest, Thus honesty is attained." --Lao Tzu
Some of us have had this conversation with God.