Build Trust

You can´t turn a person from a child into an adult, giving them no trust until 18 (or 21) and then giving them total trust to live on their own. Use the teenage years as a ´guiding´ period, helping your young adult take more responsibility and giving the opportunity to earn trust. When there are setbacks, as there almost always are in any learning experience, start again and work again. The end goal is well worth the effort.