New to agoraphobia

Hello.

I’m glad the internet exists because I truly thought I was alone, and now I know I’m not only alone, but there’s a name for it!

However, I feel like I woke up one day and my brain went “nope, you’re not safe farther than 5 miles from home. Everything outside of 5 miles is BADDDDD”

Yet, my entire life (I’m 33) I’ve driven, flown, cruised and had no issues.

I’ve driven to multiple other states alone, no issue.

Flying, no issue.

But one day I went ‘everything is scary’ and I’m lived life in this space ‘box’

I feel like I’m wasting my life!

How did anyone else overcome this when it just showed up one day?

Thank you in advance!