2 Cor 10:5 We demolish arguments and every pretension that sets itself up against the knowledge of God, and we take captive every thought to make it obedient to Christ.
Each thought must be measured against Christ. We often let emotion and negativity instead of faith rule our minds. We must take what Christ says and the New Testament dictates to determine what is true about us and our future.
Get his word in you and match it to your thoughts. Throw out what isn’t in line and meditate, absorb and proclaim it as truth. You will see victory everywhere you go instead of defeat.