When starting a new unit in your coursebook or at the start of each week or each lesson, find out how confident your learners are about what is coming up by asking them to do a quick quiz: How confident are you about…? (e.g. writing an email to a friend/describing people/using the present continuous, etc.).
Ask them again at the end of the unit/week/lesson. This can help learners to reflect on their own learning and build their confidence, as well as helping you to understand their needs better.