Do not brood over your past mistakes and failures as this will only fill your mind with grief, regret and depression. Do not repeat them in the future.
SivanandaAdhere To - Faith, Unity, Sacrifice. Avoid - Back-biting, Falsehood and Crookedness. Admire - Frankness, Honesty, and Large-heartedness. Control - Tongue, Temper, and Tossing of the mind. Cultivate - Cosmic Love, Forgiveness and Patience. Hate - Lust, Anger, and Pride.
Sivananda