It’s easy to believe that if you let yourself do what you want, you might spend the day scrolling slack-jawed through Instagram. But often the truth is that ‘scrolling slack-jawed through Instagram’ is what happens after you’ve told yourself you can’t do what you want, because you can’t afford to or don’t deserve to – and you grow so resentful or annoyed by whatever you try to force yourself to do instead that you reach for your phone as a distraction.