Spiritual experience or mental breakdown?

i was driving a few nights ago, and i suddenly started crying tears of joy, and i felt this amazing rush, and had all these good thoughts and for the next few days i felt pure bliss, i had all these profound realizations about myself and everything was good. i went to church by myself for the first time in my life and did some meditation. now its all worn off. what was it and how do i get it back?