You’re right bro... not much of a line between anxieties! The first step to healing is seeing the root of the anxiety. For example as you said, overthinking causes much if not all. A person who is thinker can’t help but to think, but you can control what you think. Positivity goes a long ways & has saved many a lives. Try to think of positive things & spend time being a help to others in some way. It’s very rewarding both physically & spiritually.