Don’t hold back because you’re afraid of hurting someone else. If your best friend wants to be a cheerleader and you make the team but she doesn’t, don’t feel guilty. If you end up earning more than your sister, it’s not a betrayal. Your success might be an inspiration for someone else, while limiting yourself to avoid upsetting the balance doesn’t help anyone. Equally, rather than being paralysed by jealousy when someone else is coming out on top, use it to spur you on to greater things. Some of our best achievements will be triggered by envy at seeing someone else fulfilling our secret ambitions.