Learning your own rhythm beats copying someone else’s routine you saw on a video.

A routine from a video was designed around a different body, a different timetable and a different set of obligations. Copying it fails on the unglamorous details: you have a shift on Saturday, you need nine hours of sleep, you are no use before ten. When it collapses, you conclude you lack discipline, when what you actually inherited was a plan that never fitted.

Keep one element of whatever routine you admire and discard the rest. Build your week around when you are honestly at your sharpest. Adjust it in a fortnight based on what happened rather than on what was supposed to.