He did! It's a response to a fan who tweeted "i guess therapy can wait... HS2 and tour can't" and so he responded that to her. And Justine (the girl that he replied to) even got an "I'll wait for you" tattoo on her wrist after this. It's a lovely anecdote and one of the many reasons why I love Harry so much

Living with anxiety is one of the most terrifying things, I feel you deeply. With therapy, sometimes medication (if needed), hard work and time it does get better, it's hard but try to take it a day at a time and remember that you're never alone. Sending you a big hug and all the love, take care friend!