Having a sponsor and/or accountability partner is biblical.
“Two are better off than one, because together they can work more effectively. If one of them falls down, the other can help him up. But if someone is alone… there is no one to help him… Two men can resist an attack that would defeat one man alone. “(Ecclesiastes 4:9-12, GNB)
“As iron sharpens iron, one man sharpens another” (Proverbs 27:17)