Jesus was the Son of God, came in the flesh, born of a virgin, lived sinless, died on the cross fulfilling the law and establishing the law of grace, an atonement for all sin, rose on the third day, ascended into heaven, and makes intercession for believers, our high priest forever. After confessing this, be baptized in obedience.
A prayer of repentance and acceptance of the Gospel of Jesus Christ is the beginning of a relationship with God. Like all relationships it must be nurtured. The Christian walk is nurtured by daily prayer, Bible reading and regular fellowship with other believers.
Believing these things in your heart, and maintaining a relationship with God, will give you peace in everything, including the events of the End Times as they continue to unfold.