I disagree with this statement.

We can work on mourning the losses, the pain we experience over what we cannot change.

Mourning does not try to put a positive spin on things. Mourning frankly recognizes the losses, openly experiences the pain. Mourning states and explores how it feels to be what we are.

Mourning helps us let go of what we cannot have. It helps us come to accept and use what we can have, what we have left.

A T should be able to help us mourn our losses.