I have serious asthma. We also all have fears. They only become disorders or phobias, when they begin to interfere with either our health, or other parts of our life. Most habit disorders are linked to poor stress management .
Some habits are helpful, such as exercise, self-disciplined eating, sugar management, etc.
It is absolutely imperative that one learns how to manage stress in a healthy way for obvious reasons. Well, the reality is that either you manage it now, or it will manage you. The art of managing stress is very exciting, not only because of improved health, but because the actual tools utilized for this type of management are also the tools of optimum performance. I like to use the metaphor of a baseball game for stress managing. You, the batter try to do your best in hitting them.