Youngite is known for helping you access different planes of existence. This is why it is a very popular shaman stone. Many shaman and people who help to retrieve soul fragments use youngite to help them navigate the other planes of existence. It especially helps you with connecting to those aspects of you that broke of as a child. It can help you through meditation to bring those lost parts back or to help heal those areas so your lost parts will come back to you on their own.
Youngite is also great for healing mental stress that we all experience in everyday life.