The Bible says in Psalm 25:14 (NKJV)-
"The secret of the LORD is with those who fear Him,and He will show them His covenant."
Several years ago, I can remember hearing one of my favorite preachers, Pastor David Wilkerson, say this was among one of his favorite verses, if not THE favorite. Of course I wanted to really listen as he said this because of the great respect I had for him. As I listened, the verse changed me. It made me want to know the secret of God...His heart, His communication among His "inner circle", closest followers. I began to pray God would show me the secrets of His heart, and He has progressively done so, as He does with anyone who fears Him.
The Bible also says in Jeremiah 33:3-
"Call to Me, and I will answer you, and show you great and mighty things, which you do not know."
Here's the summary of what I want to tell you; If you fear God (truly respect Him for who He is), and if you will call on Him (pray), God will show you things that very few people know. Truths that will set you free from things you don't even know you need freedom from. God will give you understanding, wisdom, and peace. He will remove fear and sleeplessness. He will even make your enemies to be at peace with you (Proverbs 16:7).
No, it is not complicated, and there is not a special formula...just come to God with a real heart in true faith and ask Him to reveal Himself to you...set your heart on Him, and you will see that these verses are true. God only waits for us to cry out to Him, and believe His Word to be true...to fully trust in His Son Jesus Christ.