Self-integrity
It basically means staying true to what you stand for. Doing what you said you would do, despite what you would be feeling right now and not doing bad deeds even when no one is looking because you, your heart knows what you're doing is wrong.. It takes courage and determination but it's a test of character.
I told myself that I wouldn't get distracted watching YouTube videos that whole day.. As hard as it was, I had enough self-integrity to stick to what I told before.