Why do we fear everything that is unfamiliar to us (or, to put
it differently, why are we uncomfortable with something
new?)? Actually, how is it possible to fear something that is
not known to us (i.e., understandable, defined, strange)?

We do not. We are only afraid of the things we know and
have—we have nothing against the unknown. We simply are
afraid of letting go of the past—afraid of the idea that we might
have to part from the current state of affairs (i.e., possessions,
friends, job, lifestyle, way of living, our point of view, etc.).

How do we stop fearing or getting angry? By letting go.
When you give away—there is nothing left. No fear. That’s
freedom, eternal happiness.

We are not afraid of the fear—only the concept (i.e., idea)
of the fear itself.