The idiomatic expression "on a good note" means to end or conclude something in a positive manner, leaving behind a favorable impression. It can also mean that someone is finishing an activity or task well and successfully.
Sentences with «on a good note»
It really comes to grips with the themes it introduces and then ends on the best note imaginable. (screenanarchy.com)
Leaving on a better note, I love the church, with all it's faults, because I love the people in it with all mine and their faults. (nakedpastor.com)
The defeat dealt a crushing blow, but also served as huge motivation to finish the 2012 season on a better note. (sportstarsmag.com)