We talk about wanting to change the world, and we often picture this as a lofty goal reached only by superstars, politicians and billionaires. The truth is, no matter where you are or what you’re doing, you’re making a difference just by existing. Every action you carry out will either make the universe a better place or a worse one.

Whether they’re family or friends, manipulators are difficult to escape from. Give in to their demands and they’ll be happy enough, but if you develop a spine and start saying no, it will inevitably bring a fresh round of head games and emotional blackmail. You’ll notice that breaking free from someone else’s dominance will often result in them accusing you of being selfish. Yes, you’re selfish, because you’ve stopped doing what they want you to do for them. Wow. Can these people hear themselves?!

When it comes to the way you present yourself online, the acid test is: Can you imagine Grace Kelly doing it? If you can picture her saying “Dem hos betta watch out imma beat some ass tonite”, then congratulations, you have a much better imagination than mine. Likewise, if you can’t quite see her posting a snapshot of herself drunkenly pole-dancing, think twice about broadcasting those pictures to the world.

If your attached friends are bugging you about being single (favourite accusation: “You’re too picky!”) turn it around on them. “Do you know any gorgeous single men I could meet?” (This could backfire if they’re keen to set you up and their idea of “gorgeous” is vastly different from yours. And it will be.) Alternatively, be super-sweet and tell them you’re waiting for your ideal partner “just like you did”. (It won’t work if you snigger at this point.)

A Princess has beautiful manners no matter who she’s dealing with. She would never stoop to being brusque when giving a burger order, or shouting at the barista who forgot her syrup shot. When we behave like true Princesses, people enjoy serving us, because they’re more likely to get a sympathetic smile instead of a complaint about the long wait.

If you eat healthily most of the time you can afford to indulge yourself occasionally, but if you eat nothing but junk, you’ll end up not being able to run for a bus without huffing like a steam train. (The only drawback to being super-fit is that centring your life around your quinoa intake and yoga classes often results in an overdose of smugness which may cause your social circle to shrink.)