How does one become "spiritually disciplined"?

Only by making a sincere covenant with the Father that they will always obey all of Jesus' sayings .

By practicing mindfulness meditation.

It helps you become mindful and more aware all the time of all your thoughts, words and deeds. Thus you check yourself before saying or doing something destructive, wrong or hurtful. This helps you be a good person - which is basically what spirituality is all about.

This makes you more spiritually disciplined - you learn the lessons that we have come to learn - love, compassion, empathy, forgiveness, hope, fairness, etc.

“There are different levels of learning, and we must LEARN some of them in the flesh. We must feel the pain. When you're in physical state in the flesh, you can feel pain; you can hurt. In spirit form you do not feel pain; there is only happiness, a sense of well-being.”

"We all must LEARN certain attitudes while we're in physical state. CHARITY, HOPE, FAITH, LOVE - we must all know these things and know them well."

"Our task is to LEARN, to become god-like through knowledge. We know so little. By knowledge we approach God, and then we can rest. Then we come back to teach and help others."

Many Lives Many Masters - Dr Brian Weiss

“ This earth is your school room. You souls have moved into this physical body and into this schoolroom to learn. To learn what? COMPASSION. NON-JUDGMENT. UNCONDITIONAL LOVE. Grand terms to be sure, but what do they mean? What does it really mean to have compassion for another? What does it mean to be non-judgmental?

Think about the last hour; just review it in your minds for a moment. Was there any judgment? “That driver ahead of me is slow. I don’t like that house. Why did somebody paint it that color? This road is too bumpy, doesn’t anybody in this town take care of the roads?” Little bits. I’m not talking about hatred, just little bits of judgment.

Some of you may say “But, Aaron, if we never judge anything as deficient, then there’s no force within us to try to change that which we see lacking.” Barbara is training a puppy. He’s very deficient in many learning areas. His attention span is rather short. He has learned to sit and stay remarkably well for a three month old puppy, but ten seconds is about it. Does Barbara hate that puppy or rage at him when he gets up from sitting? Or does she simply walk back to him and say “Sit. Stay”?

One does not need to feel hatred or even mild irritation to see what is wrong in the world and attempt to change it. In fact, one can create change far more readily and more skillfully, when there is no rage. Here is where anger offers the most energy, when it is transformed to compassion and to recognition of your non-separation with this earth and all life upon it. It is never wrong to feel – but it is spiritually immature and unskillful to use your emotions as an excuse to injure another.

So, what is the path to truly moving beyond anger? In human form, can you ever reach a point where you don’t feel anger? You can only begin to move beyond anger by accepting your anger. You cannot transcend what you don’t accept. When you find compassion for all the heavy emotions in yourself, THAT ACCEPTANCE is what leads you to compassion for another. Then you find that the same catalyst that led to rage or greed or jealousy simply leads you to an open hearted look at the situations that confront you, without judgment.”

“All beings who commit themselves to LIVE WITH AWARENESS, WITH LOVE AND FORGIVENESS, WITH NON-HARM TO OTHERS, are on the path to liberation from this cycle of birth and death and add their light to touch the dark corners of the universe.”

Aaron – Barbara Brodsky

First one has to be part of those whom God loves, part of his spiritual organization.

"For those whom Jehovah loves he disciplines, in fact, he scourges everyone whom he receives as a son.” (Hebrews 12:6)

Secondly, one has to do something that requires discipline. (Acts 3:19)

You first have to begin to study the Bible with someone who is trained to study the Bible and implemented in your daily life nothing is better than a Christian regeneration camp

We need to discipline ourselves to do what is Scripturally right. In time, though, thinking and acting in a godly way will likely become easier and more natural for us as our thoughts and actions progressively line up with those of Jehovah God.​—Ps. 37:31; Prov. 23:12; Gal. 5:16, 17. The apostle Paul helps us to understand what a spiritual person is by drawing a contrast between a “spiritual man” and “a physical man.” (Read 1 Corinthians 2:14-16.) What is the difference? The “physical man” is described as not accepting “the things of the spirit of God, for they are foolishness to him; and he cannot get to know them.” On the other hand, “the spiritual man” is someone who “examines all things” and who has “the mind of Christ.”

by having Faith and not going on about Jesus all the time

Pretend to be 'spiritually disciplined'. Tell enough people you are, and eventually one gullible idiot will believe you.

Just like the Bible, you can decide whatever it means for you, and it would be correct.

one can't as "spirituality" doesn't exist

1. Spiritually log in to Craigslist.

2. Spiritually search the personals for a dom/domme.

3. Spiritually meet for a discipline session.