In general a dream of being calm is a good omen telling you that you will live a long and rewarding life full of goodness.
To see calm waters indicate that your business dealing is sound.
If someone in your dream is trying to make you calm down then this denotes that you will soon have losses if you do not let your higher self keep your temper cooled down.
Dreams of calm signify that you have found your center. And because the universe is always balancing, dreams of calm signify that you will be able to handle any challenges you will face.
To see calm seas, denotes successful ending of doubtful undertaking.
To feel calm and happy, is a sign of a long and well-spent life and a vigorous old age.