This material world is fearfulness. Its prisoners are always fearful as within a prison house. In the prison house no one can violate the jail rules and regulations, and violating the rules means another term for extension of prison life. Similarly, we in this material existence are always fearful. This fearfulness is called anxiety. Everyone in the material life, in all species and varieties of life, is full of anxieties, either by breaking or without breaking the laws of nature. Liberation, or mukti, means getting relief from these constant anxieties.
This is possible only when the anxiety is changed to the devotional service of the Lord. The devotees of the Lord, however, cross the ocean of material existence without anxiety because a pure devotee is always protected by the Lord (Bhagavad-gita 9.13). The Lord gives special attention to His devotees in their activities within material, conditional life (Bhagavad-gita 9.29).
Therefore everyone should take shelter of the lotus feet of the Lord and be a pure devotee of the Lord by all means.