Each time we try and batch unrelated tasks together, we tax our brain and use up energy in the transition.
To stop making multitasking a habit, you need to set boundaries around what you will be working on when. Give yourself longer chunks of time to complete one thing at a time, and shut down other distractions such as email when you’re working on something.
The traditional 9-5 workday is poorly structured for high productivity. Perhaps when most work was physical labor, but not in the knowledge working world we now live in. Although this may be obvious based on people's mediocre performance, addiction to stimulants, lack of engagement, and the fact that most people hate their jobs - now there's loads of scientific evidence you can't ignore.
One of the most horrifying statistics for modern knowledge workers is how much time they spend on email. They send, receive, and respond to email for an average of 5.6 hour per workday. According to Cal Newport, our highest value work is rare, valuable, and cognitively demanding.
When you're feeling down, it can be really hard to pick yourself up and move forward. While you might be trying to find ways to feel better about yourself, sulking in your bed with the lights out may not sound like a bad idea either. But it's time...