A Biblical basis for training mind, will, and emotions:

Jesus said, “Love the Lord your God with all your heart and with all your soul and with all your mind and with all your strength.” (Mark 12:30)

Train the heart to love God: (heart = desires.)

Colossians 3:1-2
“Since, then, you have been raised with Christ, set your hearts (desires) on things above, where Christ is seated at the right hand of God. Set your minds on things above, not on earthly things”

Ephesians 4:22-24
“You were taught, with regard to your former way of life, to put off your old self, which is being corrupted by its deceitful desires; to be made new in the attitude of your minds; and to put on the new self, created to be like God in true righteousness and holiness.”

2 Timothy 2:22
“Flee the evil desires of youth, and pursue righteousness, faith, love and peace, along with those who call on the Lord out of a pure heart.”

1 Peter 1:14
14As obedient children, do not conform to the evil desires you had when you lived in ignorance. 15But just as he who called you is holy, so be holy in all you do; 16for it is written: “Be holy, because I am holy.”

1 Peter 4:2
As a result, he does not live the rest of his earthly life for evil human desires, but rather for the will of God.

2 Peter 1:
3His divine power has given us everything we need for life and godliness through our knowledge of him who called us by his own glory and goodness. 4Through these he has given us his very great and precious promises, so that through them you may participate in the divine nature and escape the corruption in the world caused by evil desires.
5For this very reason, make every effort to add to your faith goodness; and to goodness, knowledge; 6and to knowledge, self-control; and to self-control, perseverance; and to perseverance, godliness; 7and to godliness, brotherly kindness; and to brotherly kindness, love. 8For if you possess these qualities in increasing measure, they will keep you from being ineffective and unproductive in your knowledge of our Lord Jesus Christ. 9But if anyone does not have them, he is nearsighted and blind, and has forgotten that he has been cleansed from his past sins.

Train the soul to love God:

Ephesians 4:22-24
“You were taught, with regard to your former way of life, to put off your old self, which is being corrupted by its deceitful desires; to be made new in the attitude of your minds; and to put on the new self, created to be like God in true righteousness and holiness.”

Train the mind to love God:

Romans 12:2
“Do not conform any longer to the pattern of this world, but be transformed by the renewing of your mind. Then you will be able to test and approve what God’s will is-his good, pleasing and perfect will.”

Ephesians 4:22-24
“You were taught, with regard to your former way of life, to put off your old self, which is being corrupted by its deceitful desires; to be made new in the attitude of your minds; and to put on the new self, created to be like God in true righteousness and holiness.”

Train the will to love God:

Philippians 2:13
“for it is God who works in you to will and to act according to His good purpose.”

Philippians 2:3
“Your attitude should be the same as that of Christ Jesus…” (The chapter has to do with submission of the will.)