The translation is misleading. भय के बिना means if one does not fear then these formations of illness will not return. Fear opens the doors to all kinds of adverse formations.
The straight road to freedom from fear is an absolute faith and trust in the Divine, the faith that the Divine exists and hence whatever happens and whatever one may have to go through, He will turn it to the best, the faith that whatever He does in His supreme Wisdom is the best. One should also have the trust that if one calls the Divine, He will respond and will do whatever needs to be done. Along with faith and trust, one should also have the confidence in the Divine Grace that there is nothing impossible for it.
Affectionately,
Alok Da
