Worry and Fear only exist in the future. You are worrying and fearing about something that has not happened yet. If it has not happened yet then you can do something in the present to change this. So, bring your awareness back to the present, to this moment. Repeat to yourself “I’m alright, right now!”. Say this to yourself over and over again for a few minutes.
Close your eyes, visualize yourself where you are presently and infuse your mind and body with the feeling that everything is “alright” this very moment - which it is.
Regulating your breath also helps this process. To regulate your breath, breathe in the same duration as you breathe out. Repeat this for a few minutes.
If you concentrate while doing this exercise you will no longer be anxious, worried or fearful.
