The quality of being honest and having strong moral principles; moral uprightness.
The best way you can lead a good life without regret is to have integrity. Friends and strangers will challenge your resolve and test your principles to see if they can find the crack in your ability to retain them.
If you find yourself challenged and weak remember you can find your way back. Just pick up your bootstraps and get yourself in check with the realities of life. If you find it difficult, ask for help. Many good intentioned people can go astray but they can always get back on the right track.
Pray, believe, and work hard to be the person you want to be, not the person others want you to be especially those that lack integrity.
Without integriity we are living a lie. Simple.