Our Lady in Medjugorje: how to avoid unhappiness and have joy in the heart

Message dated January 25, 1997
Dear children, I invite you to reflect on your future. You are creating a new world without God, only with your strength and that is why you are not happy, and you do not have joy in your heart. This time is my time therefore, children, I invite you again to pray. When you find unity with God, you will feel hungry for the word of God, and your heart, children, will overflow with joy. You will witness wherever you are the love of God. I bless you and repeat that I am with you to help you. Thanks for answering my call!
Some passages from the Bible that can help us understand this message.
Isaiah 55,12-13
So you will leave with joy, you will be led in peace. The mountains and hills ahead of you will erupt in shouts of joy and all the trees in the fields will clap their hands. Instead of thorns, cypress trees will grow, instead of nettles, myrtle trees will grow; this will be to the glory of the Lord, an eternal sign that will not disappear.
Wisdom 13,10-19
Unhappy are those whose hopes are in dead things and who called gods the works of human hands, gold and silver worked with art, and images of animals, or a useless stone, the work of an ancient hand. In short, if a skilled carpenter, having sawn a manageable tree, carefully scrapes all the rind and, working with suitable skill, forms a tool for the uses of life; then he collects the leftovers from his work, consumes them to prepare food and is satisfied. As he advances still, good for nothing, distorted wood and full of knots, he takes it and carves it to occupy his free time; without commitment, for pleasure, it gives it a shape, it makes it similar to a human image or to that of a cowardly animal. He paints it with lead, colors the surface red and covers every stain with paint; then, preparing a worthy home, he places it on the wall, fixing it with a nail. He takes care that he does not fall, knowing full well that he is unable to help himself; in fact, it is only an image and needs help. Yet when he prays for his possessions, for his wedding and for his children, he is not ashamed to speak to that inanimate object; for his health he invokes a weak being, for his life he prays for a dead person: for help he begs an inept being, for his journey he who cannot even walk; for shopping, work and business success, he asks for skill from one who is the most incapable of hands.
Proverbs 24,23-29
These too are words of the wise. Having personal preferences in court is not good. If one says to the example: "You are innocent", the peoples will curse him, the people will execute him, while everything will be fine for those who do justice, the blessing will pour on them. The one who answers with straight words gives a kiss on the lips. Arrange your business outside and do the field work and then build your house. Don't testify lightly against your neighbor and don't fool with your lips. Do not say: "As he did to me, so I will do to him, I will make everyone as they deserve".
2 Timothy 1,1-18
Paul, apostle of Christ Jesus by the will of God, to announce the promise of life in Christ Jesus to the beloved son Timothy: grace, mercy and peace on the part of God the Father and Christ Jesus our Lord. I thank God, that I serve with pure conscience like my ancestors, always remembering you in my prayers, night and day; your tears come back to me and I feel the longing to see you again to be full of joy. In fact, I remember your sincere faith, faith that was first in your grandmother Lòide, then in your mother Eunìce and now, I am sure, also in you. For this reason, I remind you to revive the gift of God that is in you through the laying on of my hands. In fact, God did not give us a spirit of shyness, but of strength, love and wisdom. So do not be ashamed of the testimony to be given to our Lord, nor to me, who are in prison for him; but you too suffer together with me for the gospel, helped by the strength of God. In fact he saved us and called us with a holy vocation, not already on the basis of our works, but according to his purpose and his grace; grace that has been given to us in Christ Jesus from eternity, but was revealed only now with the appearance of our savior Christ Jesus. He who overcame death and made life and immortality shine through the gospel, of which I was made herald, apostle and teacher. This is the cause of the evils I suffer, but I am not ashamed of it: in fact I know who I believed and I am convinced that he is capable of keeping the deposit that has been entrusted to me until that day. Take as a model the healthy words you have heard from me, with the faith and charity that are in Christ Jesus. Guard the good deposit with the help of the Holy Spirit who lives in us. You know that all those of Asia, including Fìgelo and Ermègene, have abandoned me. May the Lord grant mercy to the family of Onesìforo, because he has repeatedly comforted me and is not ashamed of my chains; indeed, when he came to Rome, he looked for me with care, until he found me. May the Lord grant him to find mercy with God on that day. And how many services he has rendered in Ephesus, you know better than I do.