Fearfulness
Fearfulness is the result of material involvement.
Srimad-bhagavatam 4.24.52,
Srila Prabhupada
Materialistic Life
Materialistic way of life is always fearful because at every step there is danger. Materialistic Life is full of anxieties and fear.
Srimad Bhagavatam 7.6.5,
Srila Prabhupada
Fear
Fear arises when a living entity misidentifies himself as the material body because of absorption in the external, illusory energy of the Lord. When the living entity thus turns away from the Supreme Lord, he also forgets his own constitutional position as a servant of the Lord. This bewildering, fearful condition is affected by the potency for illusion, called maya.