“G‑d said to Jacob: Do not fear descending to Egypt…” (Genesis 46:3)
The pain is real. The fear is not.
The pain is real, because we are not in our true place. Nothing is in its true place. It is called exile. Exile of the soul.
The fear is not real, because no matter where we are, G‑d is there with us. For He is everywhere.
The only thing we have to fear is that we may no longer feel the pain. That we may imagine that this is our place after all.
For it is that pain of knowing we are in the wrong place that lifts us higher, beyond this place.
Likkutei Sichot, vol. 30, p. 234