Has God found a True Worshipper?

I want to open this letter with the following passages. Let’s take a little time to digest this loaf.
The Little Children and Jesus
Matthew 18:2-6
3 And he said: “Truly I tell you, unless you change and become like little children, you will never enter the kingdom of heaven.
4 Therefore, whoever takes the lowly position of this child is the greatest in the kingdom of heaven.
5 And whoever welcomes one such child in my name welcomes me.
6 If anyone causes one of these little ones—those who believe in me—to stumble, it would be better for them to have a large millstone hung around their neck and to be drowned in the depths of the sea.”
Matthew 19:13 Then people brought little children to Jesus for him to place his hands on them and pray for them. But the disciples rebuked them.14 Jesus said, “Let the little children come to me, and do not hinder them, for the kingdom of heaven belongs to such as these.” 15 When he had placed his hands on them, he went on from there. 2 He called a little child to him, and placed the child among them.
Matthew 21:15-16
15 But when the chief priests and the teachers of the law saw the wonderful things he did and the children shouting in the temple courts, “Hosanna to the Son of David,” they were indignant.16 “Do you hear what these children are saying?” they asked him. “Yes,” replied Jesus, “have you never read, “ ‘From the lips of children and infants you, Lord, have called forth your praise’?”
Psalm 8:22 Through the praise of children and infants you have established a stronghold against your enemies, to silence the foe and the avenger.
This week, my mulling has brought me to a very sobering conclusion. I admit, it’s taken time, because often these passages seem somewhat detached from the mind of an older believer. My focus over the last few months has been to ponder upon the heart of the worshipper or the type of worshipper we must all aspire to be. We cannot become one, a worshipper, that is, through might or power, or by skill or apprenticeship and there are no hard copy certificates or degrees to be attained. What makes one a worshipper is the heart to be one, and the deep desire and love to give such sacrificial praise to God, and expect nothing in return. To know God’s heart and the way that He desires us to enter into His presence is what the worshipper seeks most of all.
Is this attainable? Do we need some kind of recipe or understanding of some process in order to reach into the sacred space?