Building Character-Building Thought Power

UNCONSCIOUSLY we are forming habits every moment of our lives. Some are habits of a desirable nature; some are those of a most undesirable nature. Some, though not so bad in themselves, are exceedingly bad in their cumulative effects, and cause us at times much loss, much pain and anguish,while their opposites would, on the contrary, bring as much peace and joy,as well as a continually increasing power. Have we it within our power to determine at all times what types of habits shall take form in our lives? In other words, is habit-forming, character-building, a matter of mere chance,or have we it within our own control?