‘The Ultimate Guide to Writing Better Than You Normally’ by Colin Nissan
The final point from the guide seemed relevant amongst others:
KEEP IT TOGETHER
A writer’s brain is full of little gifts, like a piñata at a birthday party. It’s also full of demons, like a piñata at a birthday party in a mental hospital. The truth is, it’s demons that keep a tortured writer’s spirit alive, not Tootsie Rolls. Sure they’ll give you a tiny burst of energy, but they won’t do squat for your writing. So treat your demons with the respect they deserve, and with enough prescriptions to keep you wearing pants.