Another great post by James Clear is about the unexpected positive effect of limits and constraints on learning. He describes several types of constraints you can build into your practice: time, resources and environment, and explains how each of them works. I have used time quite a lot: timing IELTS essays or reading, giving myself (or others) unrealistic deadlines. The equivalent of resource constraint in ELT could be vocabulary flashcards: for example, writing a story with the five random cards you’ve pulled out. What about constraints of the environment? I can only think of having lessons in a noisy cafe, with no whiteboard or no paper – any ideas?