TL;DR Guide to a Good Life
There is no clear purpose to life. That means you get to pick anything as your goals. Most people want to find love, have kids, become wealthy or popular. That's all fine, but you don't have to. Do what makes you happy. If your goals improve other people's lives, that's even better, but you also don't have to. Whatever it is that you pick, try to actively make progress towards those goals.
Be at peace with life being temporary. One day you'll be dead, and that's fine. You will live forever as a member of society and building block of mankind. Try to live long and healthy, so you have more time to spend on your goals and with loved ones.
Be comfortable being alone. Whether you're introverted or extraverted, you will spend time alone. Make it enjoyable. You should not need others to be happy. If you are happy alone, you will be a less needy and better partner, friend, and person.
Respect others. Be understanding of people who think differently than you. Be genuinely curious and ask them why they think this way. Be open to their ideas. Appreciate their qualities and let them know you do. Develop a critical thinking. Look for information and avoid generalizations.
Listen to happy music. Dance. Have fun. Chill. Peace.