Return to the sound and feel of your breath every time you remember to. Physical actions are for the benefit of the beehive. Express specific gratitude.
That sounds overwhelming. Impossible.
How about just breathe?
Epictetus, from The Handbook, starts off strong:
Within our power are opinion, motivation, desire, aversion, and, in a word, whatever is of our own doing;
Epictetus, Handbook, 1.1
Within my power is this feeling of sadness. It can remain or be replaced by another feeling.
Everything is ok right now. Just breathe.