Find the following at a herb or vitamin shop. ( online is usually cheaper.)
Kava
Gaba
Valerian
Chamomile

Buy some sleepy time type tea bags. Make a strong tea using more than one tea bag.

A good body buzz weed, of course.

Oh! And realize - a million thoughts cross a person's mind every day. Most flit in and out of your mind - without needing excess energy devoted to them. Some times things get f'ed up and a thought or concern can become excessive.

There are various methods if dealing with this. Depending upon each person.

Sometime just taking a step back, and realizing what is going on and adjusting accordingly, can help.

Lack of control over a situation can cause anxiety for a real reason. In that case, take control, if possible.