I used to do random activities. I always switch my attention from one activity to another. I did something and then moved to another thing, and on and on. when those two activities met together, the level of my concentration was decreased. Then it affected my writing progress. If we want to do something with optimal focus, we should be in a flow state. Flow state is difficult to access if we do several different activities all at once. I tried to solve this problem with time batching method