I think it's dependent upon the end goal that one intends to achieve and ones interest in given set of task. If the end goal against different set of task is different, context switching would be hard. People working in startups do context switching seamlessly comprising of different apparently unrelated task i.e. Development, Growth Hacking, QA, Marketing etc. The point is to find a higher purpose that engages one holistically. Procrastination won't happen then.