A Few Things I Would Tell My Younger Self:

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1. It’s ok to wear red with red hair. Whomever told you that is wrong.
2. Moisturize your face, neck and chest, then follow with sunscreen.
3. Convenience isn’t King. Sometimes the hard way really is the right way. One and done, permanent press, two in one, automatic, instant, meh. Looking good, feeling good, tasting good etc., if good results require more effort, so be it.
4. A haircut isn’t a reward it’s a necessity.
5. Take yourself on adventures.
6. You have ADHD and learning disabilities, what works for other people probably doesn’t work for you, keep working on your own systems.
7. Read the news every day. 
8. When someone tells you you're intimidating it's their problem, not yours. 
9. It's OK to be interested in as much as you want to be interested in, absorb it all, practice as much as possible, and master what makes you happy. You don't have to pick one thing like everybody continues to assert. 
10. Figure out how to be your own boss.