There's an app for everything nowadays, including treating anxiety and stress. It's a good option when your problem is not too serious or you can't afford to go to therapy.
Puth has spoken up several times about his social anxiety, his struggles with fame, how he has a hard time dating, but he's very tight lipped about his drug use.
Since CBD flower looks and smells like marijuana, anyone living in states where weed remains illegal runs the risk of police harassment if they're caught with it.