You are a special artist. I have thought this for some time. Even special artists have some work that is stronger than others. It is probably premature to say your best work is when you are sad - perhaps this is because you have strong feeling and in this state you produce more 'direct work' ? Maybe you are more affected by 'the melancholy' - so you see it as stronger work ? You have a long career ahead, many ideas and observations to explore.
Those sad drawings look awesome!
Odd, but awesome!
Go see the friend...might cheeer him up!
Hospitals aren't fun!
Well, take care and don't try to do too much Opale!