One of mine weirdest experiences

I had a weird experience 6 months ago .So i was like sitting on a chair doing nothing only thinking about mine life and all happy experiences i had until than .And after 5 min or so i felt so freaking good i felt so happy like i had no worries that went on the whole day it was like i had taken a drug or something. It were probably happy chemicals i activate it by thinking about mine life.Any 1 that had a similar experience ?