This sound of the Lord is identical with the Lord, as we have tried to explain by the nondual position of the Lord. The material existence of our present status is full of fear. Out of the four problems of material existence, namely the food problem, the shelter problem, the fear problem and the mating problem, the fear problem gives us more trouble than the others. We are always fearful due to our ignorance of the next problem. The whole material existence is full of problems, and thus the fear problem is always prominent. This is due to our association with the illusory energy of the Lord, known as maya or external energy, yet all fear is vanished as soon as there is the sound of the Lord, represented by His holy name, as it was sounded by Lord Sri Caitanya Mahaprabhu in the following sixteen words:

Hare Krsna, Hare Krsna, Krsna Krsna, Hare Hare

Hare Rama, Hare Rama, Rama Rama, Hare Hare

We can take advantage of these sounds and be free from all threatening problems of material existence.
SB 1.11.3

There is nothing to fear but fear itself.
Isn’t it strange how fear runs our lives, fear of being alone, and fear of growing old, fear of dying, fear of change.
Some fears are good it protects us from danger, but most are either irrational whist others are not so easy to explain.
As I talk to individuals although they don’t use the term fear I find there is a small element of fear not spoken. “I just want to be loved and respected”. “I just want to have my work recognized”, “I just want to provide for my family, and you know nice house, car and holidays good clothes”
We see fear in the housing and financial markets can I make the mortgage payments what will happen when my fixed term ends? Can I afford to retire? Can I afford to go on holiday? And for some the more complex question of I would like a child but could I afford to bring them up safely and provide for all their needs?
If you analyse it most of our lives have an element of fear, as we talk to people this fear comes out in so many ways, by putting these in context with vadic understanding do we not only realise the source of fear but also how to overcome.
But still I find it hard as I identify with this body and my identification as David, but my greatest fear is this loosing the devotees, there association and friendship. Or the fear of waking up and not thinking of chanting Hare Krsna, but still at times I struggle with the basics.

But I guess may be some fear is good if it is directed in the right way keeping me focused on chanting reading hearing and associating with devotees.