Hello, Aini. There’s nothing to correct here, so I’ll make some suggestions on how you can take your language up to the next level:

Some people say “do what you love and you will never have to work a day in your life.” They say this because doing something you really enjoy can bring out the best in you. In other words (or “specifically,”), performing a task with love (or “doing a job you love”) focuses your attention and energy, resulting in a job well done (or a “optimal performance” “maximum effectiveness” or whatever phrase works best with the type of work you have in mind), and consequently, a great feeling of accomplishment.