It can be easy to spiral into an overwhelming anxiety about this situation. If things are getting to you, you could try mindfulness
Mindfulness is the psychological process of purposely bringing one’s attention to experiences occurring in the present moment without judgment, which one develops through the practice of meditation and through other training.
It takes practice, so don’t worry if you don’t feel like it works the first time you try
Sit comfortably in a calm, quiet place, set a time limit such as 5 or 10 minutes and be aware of your body. Feel your own breath – breathe slowly in and out. When you notice your mind wandering, return attention to your breath. Headspace is a great app for practicing mindfulness, alternatively you can search on Youtube