Word definitions

focus on: "I am only focusing on learning English now, later I will do other things."

have the opportunity (to do something): "The students had the oportunity to travel to Paris"

Work hard (at something). "Mary worked hard at learning French"

master a skill/a craft: "Eddie has mastered the skill of pleying the guittar"

believe in yourself: "To be successful you have to believe in yourself"

have a natural talent for: "Melissa has a natural talent for singing."

be a high achiever: "Mark is a high achiever. He always tries to get the best results."

be world-class at something: "Messi is a world-class athlete."