Let me clarify creative work on new or multiple ideas is not easy to turn on and off on command. It tends to take a while to build up the domain knowledge, pro

Let me clarify creative work on new or multiple ideas is not easy to turn on and off on command. It tends to take a while to build up the domain knowledge, project specific tools, project specific API to be creative on the project. That's consistent with your emphasis on practicing day in day out. The example you gave is for the main project you are working on day in day out. Yes, you can easily resume work the next day. What the OP advocating is working on multiple different projects for 30 minutes a day. It's just more difficult to context switch into multiple projects with such a short amount of time.