This is just incredible guide. I'm in all support that this teenage is the most vulnerable time in kids life, especially in this modern era.

Don't throw them in your cage of boundaries. Give them confidence, let them grow and explore, let them make mistakes and find ways to recover. Be your guide not Boss. When they make mistakes (of course they'll make) guide them. Don't punish them. Start giving them responsibilities, give them authority and believe me they'll be more polished than you expect.