Philippians 4:8

Finally, believers, whatever is true, whatever is honorable and worthy of respect, whatever is right and confirmed by God’s word, whatever is pure and wholesome, whatever is lovely and brings peace, whatever is admirable and of good repute; if there is any excellence, if there is anything worthy of praise, think continually on these things.

If we continually judge our thoughts by these standards, our minds would find greater peace. When our thoughts do not line up with these standards, we are to reject the thought. We are the gatekeepers of what enters our brains. We can’t ruminate over a negative thought and expect to have peace. Don’t give negative thoughts any time to settle in our thought process.