"teenage self", and even, my "20-22 year old self".

I am glad that you have understood the question correctly and have mentioned very clearly the age for which you would like to leave some guidelines if possible. Because our children age (2-12,13), will never understand such insights.

I wanna congratulate you on your personal achievements. Not everyone is ready to face the fear by accepting challenges and you did that...

Have a great weekend and good luck...