How to Stop One Rap Short

In any kind of fitness training, there's a myth that you want to train to fatigue. But in knowledge work, the equivalent your hamstring hurting is feeling that overload, stress. Once you hit that stress point, once your ham string starts hurting's too late. So we have to figure out, in knowledge context, what does it look like to stop one rup short and then tell ourselves this might feel unproductive, but long term, its actually more efficient.