If you’re going to make an important decision, make it in the morning. Your natural levels of serotonin are dopamine are higher, your focus is sharper and your brain will be more rational.
The afternoon, meanwhile, is costly for decision-making. You’re more likely to be tired, hungry, and to acquiesce to the status quo.
The longer we wait in the day to make decisions, the increased chance those decisions will get postponed or lazily agreed to. And desultory decisions might as well be indecisions.
To think different and combat conformity requires a certain amount of energy and belief that’s scientifically more prevalent before noon.