If you notice that you are feeling sad and discouraged, rise up like a warrior and begin to pray. Pray!
Declare the praises of God, thank Him, worship Him and present your petitions.
By doing that you will replace the garment of sadness with garments of praise, gladness and beauty. You need to consciously choose and replace your thoughts by taking the right actions.
Physically, if you notice physical head ache or pain, you take pain killers the same way, when you notice very bad intrusive destructive, sad, self defeating thoughts, rise up and take action. Those thoughts are from evil spirit that give spirits of fear, sadness, discouragement and worry. The Holy Spirit gives love power and sound mind.
When you sit with the word of God in meditation, and rise up to pray, God will change your garments and give your fruits/spirits/garments/oil of the Holy Spirit like faith, hope, love, boldness, strength, joy, peace, faithfulness, gentleness, patience, kindness, self control, power, sound mind, wisdom, counsel, glory, mercy, life etc
May great grace be upon you, in Jesus name
“To bestow on them a crown of beauty instead of ashes, the oil of joy instead of mourning, and a garment of praise instead of a spirit of despair. They will be called oaks of righteousness, a planting of the LORD for the display of his splendor.” Isaiah 61:3
“For God has not given us a spirit of fear, but of power and of love and of a sound mind.” 2 Timothy 1:7
“The Spirit of the LORD shall rest upon Him, The Spirit of wisdom and understanding, The Spirit of counsel and might, The Spirit of knowledge and of the fear of the LORD.” Isaiah 11:2
“But the fruit of the Spirit is love, joy, peace, longsuffering, kindness, goodness, faithfulness, 23[g]gentleness, self-control. Against such there is no law. 24And those who are Christ’s have crucified the flesh with its passions and desires. 25If we live in the Spirit, let us also walk in the Spirit.” Galatians 5:22-25
“Therefore take up the whole armor of God, that you may be able to withstand in the evil day, and having done all, to stand.”
“Stand therefore, having girded your waist with truth, having put on the breastplate of righteousness, 15and having shod your feet with the preparation of the gospel of peace; 16above all, taking the shield of faith with which you will be able to quench all the fiery darts of the wicked one. 17And take the helmet of salvation, and the sword of the Spirit, which is the word of God; 18praying always with all prayer and supplication in the Spirit, being watchful to this end with all perseverance and supplication” Ephesians 6:13-18
“And now these three remain: faith, hope and love. But the greatest of these is love.” 1 Corinthians 13:13
“May the God of hope fill you with all joy and peace as you trust in him, so that you may overflow with hope by the power of the Holy Spirit”. Romans 15:13
“Do not be anxious about anything, but in every situation, by prayer and petition, with thanksgiving, present your requests to God.” Philippians 4:6
“Finally, brothers and sisters, whatever is true, whatever is noble, whatever is right, whatever is pure, whatever is lovely, whatever is admirable—if anything is excellent or praiseworthy—think about such things.” Philippians 4:8
“That the God of our Lord Jesus Christ, the Father of glory, may give to you the spirit of wisdom and revelation in the knowledge of Him”. Ephesians 1:17