Matthew 5:3 “Blessed are the poor in spirit, For theirs is the kingdom of heaven.”
You do not look at yourself or begin by trying to do things to yourself.
You look at God.
You read His law.
Look at what He expects of us.
Contemplate standing before Him .
Look at Yeshua the Messiah
The more we look at Him and how He lived His life, the more hopeless we feel about ourselves.
Look at Him.
Keep looking at Him.
Once you realize there is nothing you can do yourself, it will be done.
You cannot look at Him without feeling your absolute poverty and emptiness.
Empty, hopeless, naked, vile.
But He is the all-sufficient One.
When you see Him, when you stand before Him, only then will you know how empty you really are.
It is this emptiness, this poorness of spirit, that allows you to begin the journey into His rest.
This is a dead serious summary of chapter 4 of Studies in the Sermon on the Mount by D. Martyn Lloyd Jones