Your first name of Callan creates an idealistic, sensitive nature and a desire for culture and the refinements of life. When things do not go well and your self-esteem is deflated, you are likely to become uncommunicative. Although you are a kind person who desires association and friendship, you are really rather shy. You appear calm to others, but at times you suffer inwardly with nervous tension. You are not robust because your inner tension saps your vitality. You are easily offended, and can suffer with moods of depression. With training you could be artistically creative as you have an appreciation for music and the arts. Happiness and fulfilment are elusive under this name. You want the best, but lack the confidence and aggressiveness to materialize your desires. The heart, lungs, or bronchial tubes could also be an area of potential weakness, with asthma, flu, or pleurisy ensuing.