If you think about disaster, you will get it. Brood about death and you hasten your demise. Think positively and masterfully, with confidence and faith, and life becomes more secure, more fraught with action, richer in achievement and experience.
What is a fear of living? It's being preeminently afraid of dying. It is not doing what you came here to do, out of timidity and spinelessness. The antidote is to take full responsibility for yourself - for the time you take up and the space you occupy. If you don't know what you're here to do, then just do some good.
Keep your thoughts positive because your thoughts become your words. Keep your words positive because your words become your behavior. Keep your behavior positive because your behavior becomes your habits. Keep your habits positive because your habits become your values. Keep your values positive because your values become your destiny.