For example, I have been teaching myself about e-commerce and digging into some Stripe API documentation. At the same time, as an entrepreneur, I am stressed about taking so much learning time while the bills pile up. I am setting a 3 day window where I will do nothing but focus on the documentation and tasks in front of me. What I get done is 3 days is it. Then I stop, review, decide, drop it, keep going. It's that simple. For 3 days, I will park all of my worries and put them in a list of later.