How determined does a person have to be to achieve their goals? How highly must the odds be stacked against you for you to give up?

Sara Alami, an English teacher from Iran, couldn’t have had a more difficult road to where she is now. She’s the co-founder of an Iranian English language school, teaches online to students around the world and has a massive social media following. But nothing about her background, and how she learned English, would make you think any of what she’s achieved should be possible.