Think about it this way: if you are making a lot of progress then you are not learning anything new. It’s when you are stuck, when you have hit a wall, that’s w

Think about it this way: if you are making a lot of progress then you are not learning anything new. It’s when you are stuck, when you have hit a wall, that’s when you are doing something new. Something where you have to push hard and think hard to make progress. But that is also where you learn and make personal progress. So seek out problems that are hard not easy.