We can rest is certain foundations based upon our beliefs of the Bible. The Bible says that all scripture is God-breathed..
All Scripture is God-breathed and is useful for teaching, rebuking, correcting and training in righteousness, 17 so that the servant of God[a] may be thoroughly equipped for every good work - Timothy 3:16-17
.. and along with the fact that God CANNOT lie, we can rest in all the beautiful things that the Bible says about us.
Mediate and says these words to yourself daily, believe the words because we know God CANNOT lie....
The LORD is my shepherd; I shall not want. He makes me lie down in green pastures; He leads me beside quiet waters. Even though I walk through the valley of the shadow of death, I will fear no evil, for You are with me; Your rod and Your staff, they comfort me. You prepare a table before me in the presence of my enemies. You anoint my head with oil; my cup overflows. Surely goodness and mercy will follow me all the days of my life, and I will dwell in the house of the LORD forever. Psalm 23
We don't realize the power we have over lives, by speaking scripture over our lives you will be transformed from the inside out. Live the life God wants for you.