I suffer from depression and anxiety of various degrees all the time. Worked hard to find things that could fill my time and bring joy back as much as possible. Getting back into Halloween and creative processes saved me. A call up buddy idea is great and I do have that to some extent. Never underestimate what anyone might be going through. A check-in can be a big deal to anyone suffering even if they don't want to discuss specifics of what is weighing them down.