One weird trick I use is to listen to a particular kind of music. The genre isn't important. Neither is the content. What's important is that I've listened to that same music while experiencing a flow state in the past.
Just as music attached to a time and place can make us remember how we felt back then, music attached to memories of deep work can make us feel more focused. I don't have any sources to back this up. It's just my personal experience.
Just as music attached to a time and place can make us remember how we felt back then, music attached to memories of deep work can make us feel more focused. I don't have any sources to back this up. It's just my personal experience.