Let me try again. I shouldn't have mentioned willpower. Let me restate the problem.
I try to do something and I have the physical sensation of hitting a wall that shouldn't be there. Thoughts never stop at that part of the brain.
I'm talking about a fundamentally different mechanism than thinking something is too hard. It's a hardware interruption that I have no control over.
I've spent my entire life working around this and it's difficult. Especially when everyone thinks I'm just being lazy or I just need to do this one thing. I'm still trying to figure out how to explain it better.
Let't imagine that you have a task, that you started doing, but then hit the hardware wall. How physically/emotionally/intellectually tired are you at that point?
What will happen if you just rest? Sleep, eat, exercise/go on a walk, lay down. No phone, no social media, no doom scrolling, no tv, no netflix, no gaming. Just 100% effort of resting and recovering, without any distractions.
Would you not get bored at some point and will decide that it's better to complete the task rather than continue this boredom while fully rested