As the Sufi mystics teach, "He who knows himself knows his Lord." Or as the Greek maxim on the Temple of Delphi declares, "Man, know thyself, and you will know the universe and the gods!"
Therefore, the knowledge you seek is within. If you wish to alleviate your suffering and to know the peace of divinity, you must become cognizant of yourself.
The following texts will greatly aid you in getting started on this path:
For thirty years I sought God. But when I looked carefully I found that in reality God was the seeker and I the sought. -Bayazid al-Bastami