Structuring your work for the day

As I get older, I begin to think more seriously about efficiency hacks, in particular how to self-structure my day so I get the most out of myself. I have heard different things about whether to do rote work early or late, similarly for work that requires research or problem solving. I have even seen hacks that concern the order in which one reviews material over the course of a week for purposes of optimizing memory. Who here has had success with anything like this? It's time I stopped taking the brute force approach for granted.