1. Grades really do not matter. Grades on a resume do not help to get better jobs. Don't spend too much time in High School or College just studying for grades, instead get more real world work experiences. Around a B average is still good to be able to avoid the schools radar, but don't waste too much time just to get higher meaningless grades.
2. Don't get financially tied up with anyone, especially relatives or b*nks, at least over an amount that could be paid back quickly, or it could turn into years of trouble. Be careful with the stock market, there is a lot of corruption and the odds always favor the house.
3. Have your own goals and do actions towards them. Do what you really want to do, not to please others or not doing what others say they believe you should do especially when it's things you do not want to do.
4. Have s*x before you get too much older (there are some people out there who waited to have s*x until their 30s or 40s and they really regret that they didn't have s*x when they were younger).
5. Do jobs (even for free or a lower salary), just to get in the door of some places to learn there and to get a variety of work experiences in High School and if go to College to get more skills and to network.
6. Don't get caught up in being a religious fanatic. Believing in G*d is fine. But don't listen to those who say s*x is for marriage only.
7. Don't buy a very expensive house or car. Save up money for experiences such as, travel, and doing fun activities.
8. Learn some of other languages of at least 2 or 3 other countries that you want to travel to eventually. It will help when meeting women in other countries and when doing things in those countries. If you are in school sign up next semester for a language class. Then, travel to those countries.
9. Exercise at least 5 days a week consistently (don't stop exercising for extended amounts of time) up to the day this life is over. There is so many reasons why, so just schedule in an hour every day and exercise.
10. Unless it's part of your job, don't spend too much time daily on the internet. Wisely choose the sites you go to. Decide on a unit of time, such as not more than 60 minutes a day (keep track if you know you're going over this amount of time).