The apprehension in the eyes of a teenager buying a rose for his first crush.
The mother sitting at the dinner table till late in the night waiting for her son to come home from office - only to be told he has dined out with his colleagues.
The anxiety of a student as he goes through the exam results on the college notice board.
The trembling hands of a person praying before God.
The source of success.
The reason behind sorrow.
( Success and sorrow - both come from expectations. The positivity and negativity in the world comes from the same source too. )