desomnial
noun
The state of avoiding sleep because one is not looking forward to the next day.
Can be triggered by idler’s remorse. Often leads to insomnutia.
Rudolf knew full well that staying up late wouldn’t allow him to get out of giving a presentation in the morning, and in fact would make things worse by leaving him tired and groggy the next day. But he was in desomnial, so he kept reading his book hours past when he should have gone to sleep.