It is perfectly fine to make plans for the future, yet each individual should live day by day, without worrying about the outcome of those plans, the physical body can only react in the present moment. Worrying about future events, or dwelling upon past unfavorable situations, only confuses the body’s mechanisms, and undermines their precise activity in the present moment. February 1, 1984, p.81, The Way Toward Health
I am not saying that anyone should pretend that unfavorable circumstances do not sometimes exist, or that they may not be encountered in the past, present, or future. It is also true, however, that advantageous events occur with a far greater frequency than do negative ones - otherwise the world that you know simply would not exist. It would have disappeared in the throes of destruction or calamity."