lesson - n. a single class or part of a course of instruction

adjustment - n. a change that makes it possible for a person to do better or work better in a new situation

comfortable - adj. causing no worries, difficulty or uncertainty

rollercoaster - n. a ride at an amusement park which is like a small, open train with tracks that are high off the ground and that have sharp curves and steep hills

positive - adj. hopeful or optimistic

curiosity - n. the desire to learn or know more about something or someone

anxiety - n. fear or nervousness about what might happen

participate - v. to take part in an activity or event with others

teenager - n. someone who is between 13 and 19 years old

desperately - adv. done in a way that uses all of your strength or energy and with little hope of succeeding