Eventually got diagnosed with a congenital heart disease. Turns out, when your heart is behaving in a way that mirrors symptoms of anxiety, your brain decides you’re anxious. Your brain just picks something to be anxious about, because there’s no mental reason for anxiety.
Within a week of being on the heart meds my anxiety mostly disappeared. Still get anxious from time to time, but over actual things and it’s manageable. But, was really a life changer