What important things a 19 years old should know?

I am going in flashback to my 19th year to answer this question. I was a freshman at college and here is my sincere advice to my 19 year old self:)

• Passion- Do things you are passionate about. Write down the list of things you love doing and pursue them.
• Not getting into your preferred college (IIT) is not a bad thing if you focus on what you have got rather that fretting about what you have missed.
• Mistakes- Don't be afraid of making mistakes. Learn from your mistakes and don't repeat them.
• Friends- It is the time to make life long friends. Cultivate good relationships that will make your life beautiful.
• Volunteer- Look beyond yourself. There are many causes to which you can lend your hand. Try it and you will relish the experience.
• Learn- Learn new things which are not related to your subject of expertise. It will broaden your horizon and deepen your Insight.
• Start early- Identify what you want to do in life. Don't follow the rat race. Create your own path and start early
• Take the escalator- Always think creatively and don't try to climb a ladder when you can take an escalator.
• People- Nurture enriching relationship with people online and offline. In today's world, although it's important what you know but it is more important whom you know. [ For example, Most of the US Universities ask for reference when you opt for higher studies]
• Eat well- Yes, the metabolism is good at that time so you need not worry about putting on weight. Just enjoy your favorite foods.
• Cultivate Hobbies- Read books, write, watch movies, play sports, collect stamps, do anything which makes you happy. These hobbies will make your life interesting and meaningful.
• Don't judge your parents- Sooner or Later you will realize that your Dad was always right!
• Don't ignore your loved one. Be it Family, Friends or anyone- The biggest casualty of the " who cares" attitude of a 19 year old teenager is his/her loved ones.  Never Hurt a heart that loves you because wounded hearts are like crushed flowers than never bloom again.
• Dream- Don't be afraid to see dreams as those who dream can make it a reality someday. Dream Big and Chase your Dreams. Never settle for small things.
• Choices- Life is all about the choices we make. Try many things but don't get addicted to them. Don't blindly follow something just because it makes you look cool.
• Failures- Learn to celebrate Failures. They are the thankless job done by God to make you stronger.
• Be comfortable in your skin- When your stop worrying about how you look and start feeling comfortable in your skin then you truly enjoy life.