Nothing transforms my prayer life like quoting Matthew 18:3 to myself:
Unless you change and become like little children you will never enter the kingdom of heaven.
Here's Barth on coming to our Father in heaven as child-like beginners:
In invocation of God the Father everything depends on whether or not it is done in sheer need (not self-won competence), in sheer readiness to learn (not schooled erudition), and in sheer helplessness (not the application of a technique of self-help). This can be the work only of very weak and very little and very poor children, of those who in their littleness, weakness, and poverty can only get up and run with empty hands to their Father, appealing to him. Nor should we forget to add that it can only be the work only of naughty children of God who have wilfully run away again from their Father’s house, found themselves among swine in the far country, turned their thoughts back home, and then - if they could - returned to their Father … Christians who regard themselves as big and strong and rich and even dear and good children of God, Christian who refuse to sit with their Master at the table of publicans and sinners, are not Christians at all, have still to become so, and need not be surprised if heaven is gray above them and their calling upon God sounds hollow and finds no hearing. The glory, splendour, truth, and power of divine sonship, and of the freedom to invoke God as Father, and therefore the use of this freedom - the Christian ethos in big and little things alike - depends at every time and in every situation on whether or not Christians come before God as beginners, as people who cannot make anything very imposing out of their faith in Jesus Christ, who even with this faith of theirs - and how else could it be if it is faith in Jesus Christ? - venture to draw near to his presence only with the prayer: “Help my unbelief” (Mk. 9:24). Mark well that this has nothing to do with Christian defeatism. It describes Christians on their best side and not their worst, in their strength and not their weakness (2 Cor. 12:10).
Karl Barth, The Christian Life: Church Dogmatics IV.4: Lecture Fragments (trans. Geoffrey W. Bromiley; Edinburgh: T&T Clark, 1981), 80.
Source: Jason Goroncy
Have you ever heard a more heart-warming doctrine lecture??