I think it is time to list some concrete fears:

fear of death
of illness
of pain
of suffering
of despair
of not understanding
of disturbance or reversal of powers
of being unloved
of the unknown or strange
of destruction
of humiliation
of degradation
of poverty
of hunger
of aging
of unworthiness
of transgression
of punishment
of making a mistake
of loss of dignity
of failure
of oblivion
of outliving the mind
of eating an anchovy

These are not simian fears. These are human fears.

In this particular moment I am not fearful.  At worst I am vaguely anxious regarding distant possibilities.

But of Ruefle's list there are three (in bold) which I expect an MRI would display as small fireworks.

For each there is precedent and there is a presenting cause.  In each case, I am proactive in preventing and mitigating.

But much - most - is beyond my influence.

I like anchovies.