Dream-A true calling?

Deepak Chopra tweeted,"How do you know that a dream is true calling and not an indulgence of the ego mind?"

I feel dreams are manifestations of our expectations from life.They are our hopes, which keep us going.I am here talking of both night and day dreams which we take in the wake of our hopes.Every time our life changes direction we dream a new dream aligned to the latest happenings in our life. this is our way of survival.Now whether they are true calling or not is more dependent on how HE has planned our destiny.I am sure Gandhi never ever imagined or dreamed that becoming MAHATMA was his true calling.