"Perfect love casts out fear." It is not be thinking ourselve sright that we cease to fear. It is simply by loving, and abandoning ourselves to the One whom we love without returning to self. That is what makes death sweet and precious. When we are dead to ourselves, the death of the body is only the consummation of the work of grace.
To see our work as prayer and an opportunity to bring forth a flash of truth is a great gift. To know that even the busy world is a holy world is quite a change of heart.