Introverted sensing?

[ivan]

So I am 22 years old INTP and i am very introverted in a sense that I am unaware of my surrounding. When I go to outside I do not pay attention to what is going on around me since extroverted sensing isn`t my strong cognitive function. It is like I do not pay any attention to physical objects that are around me. I usually focus on my thought and my room is always a mess. When I mom told me to clean up my room i was like what is she talking about but later that day I smoked marijuana I realized how messy my room was. When I smoke marijuana I feel like I perceive my surrounding in a different way and become more aware of what is going on outside of me and looking at thing from different perspectives.
I read that around 30 years, people will developed their 3rd function (witch is introverted sensing for INTPs). I feel like sensing function is what I need to function normally in every days tasks.
Did you guys feel the same way?
Did you notice any change when your introverted sensing matured?
If so please let me know how did it change you.
Did it improve your life?