<human>: Can you give me the gist of the text in a nutshell?

Here's my story..I waited to finish 1st year of university to smoke weed after high school ended. I was not a smoker, but would occasionally indulge. Ever since I smoked that joint after my last final of 1st year, I have been smoking regularly. I was going through about 3g a week. It helped me relax after long study days. Hell I even did better 2nd year than 1st year (when I wasn't smoking). However, after a year and a half of daily use I realized how much its changed me. 

You see, before I used to be much happier and more caring. i did not mind doing favours for others. I always had a smile on my face. Now I am colder, calculating, and overall harder to make happy. I find that not too many things impress me, specially when they come from others. My memory became worse and understanding things has became difficult. I am less motivated overall. I care less. My confidence has greatly declined. I am more conservative and less adventurous. 

I've managed to slow down my smoking to only on weekends now and I happen to feel much better. Quitting is around the corner.
<bot>: Long term weed use has changed me into someone I'm not too confortable being so I'm slowing down and quitting soon.