Disappointments happen for many reasons.

When it happens, a person falls down on Earth. His hopes are shattered.

These are like mini deaths. People recover and start living again.

Like broken but refixed vases.

The wounds heal. Sometimes scars are left.

I would say that disappointments are nothing but mini deaths. Violations of hopes and expectations.

We live in body. But we also live in our hopes. Our hopes are like extended limbs. When hopes are violated, we feel as if our limbs are killed, violated, murdered.

Meditations suggested:

I am not my hopes.
I am not my expectations.
I have no extended limbs.
I am not even this body.
I am eternal Atma
I am an Aura
I do not gain when hopes are fulfilled.
I do not lose anythings when my expectations are violated.
I live in mindfulness.
I am mindful.
I am A