There are two levers to manipulate. Do more of the good stuff. Do less of the bad stuff. The choice seems linear and inconsequential. This is not true.
When a car is not fuel-efficient we could just pour in more fuel and get where we are headed. It will cost more (more good stuff) but we will still get there. Doing more good stuff is an easy fix.
It makes much more sense to optimise the engine. It will end up costing you less for the same result. (Less of the bad stuff). This is because performance is a function of inputs over outputs. The goal is to optimise the result and not the outputs.
We do this by reducing the value of the denominator (inputs) first. very growth in outputs thereafter will yield exponential results.
Do less of the bad stuff (ill-discipline, poor diet, lack of sleep, unhealthy habits), then add more of the good stuff. (Great work, outputs, deliverables, discussions, speeches, ideas, plans, strategies, businesses).
You run your own engine. Make sure you keep up with the maintenance.