As for long time I am very active in teachings my little sister who to be more responsible and how to achieve your goal but no matter what I tried. Nothing seems to stick she is always doing the old things and following the old patters.
Then I remember this quote from Galileo Galilei I think “We cannot teach people anything; we can only help them discover it within themselves”. So all I can do is tell her what is the right thing to do and leave her to it. And let her decide what to do.
It is her life and her responsibility. As it is written in Srimad Bhagavad-Gita that everyone is responsible for all the actions he takes. And it is not my responsibility to live her life for her. She has to make all her choices I can only work as guide.
So are you tired of teaching someone. Always remember this quote.
“We cannot teach people anything; we can only help them discover it within themselves”
Be the guide done live there life for them. You have to put your faith in them so that they feel motivated and supported and you can always praise them when they are right. Positive support is very necessary you human development and strong personality development.