In the book of the Hebrews we read,

That by two immutable things, in which it is impossible for God to lie, we might have strong consolation, who have fled for refuge to lay hold of the hope set before us. This hope we have as an anchor of the soul, both sure and steadfast.

Hebrews 6:18-19 - NKJV

The hope of the gospel anchors your soul in still waters within the sphere of God's covenanted peace. Moved away from this anchor, the soul takes itself off into spheres of thought and activity far apart from the peace God has covenanted with us.

When the soul breaks away from the hope of the gospel, it fills with every kind of thought. These thoughts can get to be so noisy you can no longer hear the still, small voice of God within.

The still, small voice of God within your heart cannot be heard while your soul is racing in a state of disquiet and distraction. This is why you need the hope of the gospel actively at work anchoring your soul.