None of us can travel back in time. But if you had the opportunity to do so, what would you change and what would you tell your younger teaching selves? Experience brings new skills as well as wisdom. With time comes knowledge and confidence. Wouldn’t it be amazing if you were able to share this with your younger self? Kerra Maddern asked six teachers from around the world to look back on their careers: the highs and lows, the successes and failures. Here, they bypass the years to write letters of advice to themselves at the start of their careers