I'm so glad the breastplate of righteousness is not MY "righteousness". We are putting on the righteousness of Christ!
That being said, how do we do that? When we surrender to Him as Savior and Lord, repenting of our sin, seeking His forgiveness and trusting Him for salvation, we are given His righteousness before God. Therefore, when God sees us, He sees the righteousness of Christ! Hallelujah!
Now, as a believer, it is our responsibility and privilege to live holy lives. We do that by suiting up with the armor of God. To protect our heart, we put on the breastplate of righteousness. In other words, we remember Whose we are and we trust Him to lead us in His way. He leads; we follow.
We no longer have to worry about our sin. We only have to respond in obedience to the way the Holy Spirit leads us. When we seek Jesus, knowing we are covered in His righteousness, we are bound to display the fruit of the Spirit.
But the fruit of the Spirit is love, joy, peace, patience, kindness, goodness, faithfulness, gentleness, self-control; against such things there is no law. Galatians 5:22-23
When we remember to Whom we belong, the ole devil and those working with him, cannot change the fact that we are HIS. We have HIS righteousness. We are free from sin, free from our past, free from our failures and free from the hurtful words of others!
Today and everyday rest in the assurance that you have the righteousness of Christ as a believer. So, suit up!
The Armor God
10 Finally, be strong in the Lord and in the strength of His might. 11 Put on the full armor of God, so that you will be able to stand firm against the schemes of the devil. 12 For our struggle is not against flesh and blood, but against the rulers, against the powers, against the world forces of this darkness, against the spiritual forces of wickedness in the heavenly places. 13 Therefore, take up the full armor of God, so that you will be able to resist in the evil day, and having done everything, to stand firm. 14 Stand firm therefore, having girded your loins with truth, and having put on the breastplate of righteousness, 15 and having shod your feet with the preparation of the gospel of peace; 16 in addition to all, taking up the shield of faith with which you will be able to extinguish all the flaming arrows of the evil one. 17 And take the helmet of salvation, and the sword of the Spirit, which is the word of God. 18 With all prayer and petition pray at all times in the Spirit, and with this in view, be on the alert with all perseverance and petition for all the saints, Ephesians 6:10-18