quitter

Don't be a quitter, keep pushing forward.

She's not a quitter, she always finishes what she starts.

Being a quitter is not an option if you want to succeed.

He's known as a quitter because he gives up easily.

She's labeled as a quitter by her classmates for dropping out of school.

A quitter never wins, and a winner never quits.

Don't be a quitter, keep going until you reach your goal.

He's often seen as a quitter because he gives up when things get tough.