What is maturity?

A lot has happened in a couple of years.
I wanted to buy an IPhone. I was saving for it for a long time. But then I realized Dad has a dream to buy bullet(because of our studies and expenses, he always neglects his dreams.) . I had saved enough for an iPhone but then I decided to gift dad a bullet from my saving. I'm saving for it. I thought I've put my Parents wishes above mine. I felt I'm matured.
My sister went to a doctor for a checkup with her husband. She got the news, she was pregnant. I was the first one she called. I had a tear drop in my eyes when she said, soon you'll be mamaji (uncle).
I said her, Dad and mom must be very happy? .
she replied, You are the first one to know this.
I asked, why me?
She replied, you might be younger than me but after my marriage, you treat like an elder brother. You're a good listener.
I felt I'm matured.
I had a skullcandy headphone. I was pretty attached to it. My younger brother asked me for it, I gave it to him. I thought , now I value emotions more than the materialistic things. I felt I'm matured.
My mother was cooking and I heard her sneezing. She had cold .I made my mother rest and cooked food for her. I thought I have learned from my mother loving selflessly. I felt I'm matured.
I had a Gf. She was not emotionally stable. She had mood fluctuations. I didn't give upon her. I thought I've learned to be patient. I felt I'm matured.
A friend was going through rough patches in his life. He came to me for seeking advice.I tried giving some advice. They got along well. I thought I value relations.I felt I'm matured.
A friend punched me out of frustration. He left and I was stunned, he was my roommate. He came back, hugged me and said sorry . I left my ego and hugged back. I felt I'm matured.
A while ago, I overtook a car, the stranger yelled at me, I didn't take things personally. I felt I'm matured.
I hope I have written about maturity in this post. If not, you can call meimmature.. :)