If I could talk to my teenage self I would tell her to relax. Just relax everything will fall into place. Spend more time with friends and people you love & work less. Getting a 2ed full time job and a 3rd part time job will not benefit your life long term. Remember to take care of yourself before you take care of other capable adults. You are so important! If you take care of yourself now maybe you wouldn’t struggle so hard in the future physically and mentally! Stay in school. Finish the last few months of high school instead of dropping out. I have my GED but I am not happy with it. & pick a degree in college and stick with it!
But most importantly I would tell my teenage self to spend more time with her children when she has them. It is very limited. Love like you have loved no other. Never ever miss a single moment with them.
What would you tell your younger self? What is the most important thing you know now that would be useful to know when you were a teenager?