"if you encounter anyone that has struggled or is struggling--with an addiction or not--make sure to do what you can to tell them that they cannot ever do anything to make God love them less. I have a personal testimony of this that is as large as my testimony of the Church that God won't ever abandon any of His children and that we will never be forgotten. God will love us whether we like it or not.
Beware of perfectionism, and I'd advise that when you teach you'll help them feel like they don't have to be immediately perfect. We aren't given a timeline for perfection, but are simply expected to try and do a little better each day. That's actually harder in my mind, because going day by day makes it super easy to get into the trap of surviving instead of living. We get caught up going day by day instead of living each day, and there's a big difference between the two. If we try and be perfect immediately, we'll fail, burn out, and probably come to the conclusion that we can't do it right off the bat. That will help them grow, but it will cause a growth in them that should help them wake up. But when we live day by day, we remember to honor God at all times, and make sure to put Him first.
Alternately you'll run into perfectionists like me, who will go through life and not take advantage of opportunities and will berate themselves for not being as good as they know they could be. Advise them to forgive themselves and try harder. Gordon B. Hinckley said that goals aren't sticks to beat ourselves with, but milestones to work towards, and that the Lord doesn't want us to use our past as a consistent source of guilt if we have repented of our wrongdoings. It's the balance between not burning yourself out and not getting lazy."
