I'm sorry to hear you are feeling anxious. It's understandable to be nervous going out after 8 months. Hopefully you had at least an okay experience when you were out and you will be more relaxed next time. *Hugs*
I found myself a very efficient way to get rid of anger and anxiety. We have a pond nearby. It is a natural pond with everything find in one that is comfortable for human use. There are a couple of friends, we have recently made it a habit to swim a bit The pond is wide and a bit deep. But nothing dangerous but strong enough to pose challenge and excitement. So exercise is also getting involved, so the activity is healthy.