Depression generally aint something that can be cured with a change of attitude. It usually takes time and a lot of setbacks. Some days you think you are doing/feel better, but then other days something "breaks" and you spiraling down again. It's a constant fight imho. Is it frustrating to see the MC like this? Sure it is. But that's just the way I've seen depression works, so I personally will give the MC some slack on his attitude.