You get life experience from living life. There isn't a way to cheat time. Just like if you haven't been a police officer for 20 years, you won't have 20 years of policing experience.
You suck at writing people because you don't understand people.
How do you understand people? Be a person. Get a job. Get fired. Take public transport. Travel. Make friends. Lose friends. Fall in love. Cheat on someone. Get cheated on.
You know the answer, why are we discussing this?