What did you learn too late in life?

I am 19.

Here's what I wish I learned earlier in life:

• You can decide how you react to situations.
• Everyday, be grateful for your protection and well-being.
• Write down your goals for every week / month.
• If you don’t sleep enough, it means your priorities need adjustment.
• Someone who’s grateful is unstoppable; Gratefulness beats fear.
• Wake up dancing to your favorite songs.
• Become aware of your initial reaction to everything: Your Ego.
• Good things happen to good people.
• We live in a spiritual world with physical hurdles.
• Learn to change your thoughts; Learn to change your life.
• Be honest. Always.
• If you are ready to lie about it, that means you need to talk about it.
• Treat everyone as if you were to meet them again in the afterlife.
• In the next 10 years, more than a thousand new people will meet you. Who do you want to be when you meet them?
• Your happiness is not determined by your physical circumstances.
• You can’t see your gifts because they are natural to you.
• If you put someone on a pedestal, the only way they can look is down.
• To improve your life by 80% over the next 12 months, experience the meditative state of living in the moment every day for 20 minutes.
• Now is the time to decide how you feel on your deathbed.
• You are barely a sand grain in the vastness of the universe.
• Reward yourself regularly for trying to improve; what gets rewarded gets repeated.
• True happiness is a passion.
• Treat others as if they were you.
• Watch a movie as if it was your last one.
• One person is usually enough help you solve your problems.
• Read every day, else you’re profoundly missing out.
• Life is a 100% mind game.
• Your personality creates your personal reality