Be the change you want to see.

Feelings are just feelings. They aren't the same as reality, and they will change.

Fear will blow past you, through you, let it go.
Sadness will drain down and out, let it go.
Worry, you can move forward and leave behind, let it go.

The best solution is occupation: DO SOMETHING. The feelings will do what they do, and then they will go away.

And then you will be there, having done something useful, and feeling better.

This too shall pass, and you will be okay again.

Breathe.