Every promise of God concerning you manifests only when you walk in the way that brings about its manifestation. This means that the manifestation of God's promises in our lives depends on our ability to discover and walk in that way.
The way that causes the manifestation of God's promise in your life is in His words and commandments. Obedience to all His commands secures the manifestation of His promise to you, but the problem is we struggle to obey His commands because we're looking left and right. God tells us in Deuteronomy 28: 14 that we shouldn't turn aside from any of the commands He gives to the right or the left. What this means is that our ability to focus only on His instructions is how we manifest His promises in our lives and get to our promised land. When you start taking instructions from other people, God looks at this act as following other gods and serving them and the consequence of this is that you won't be able to get to your promised land that way because no other instructions can lead you to possess what God has in store for you.
God's way is the only way that secures your access to your promised land and His way are in His words.
To walk in His way is to obey His words. There's always something God will tell you to do for you to have what He desires for you to have. When you don't know what God is telling you to do, you delay your possession of what He desires for you to have so your ability to know not just what the blessing is but also what you need to do to have it is what creates the possibility of attaining it.
Spiritual maturity
Spiritual growth helps you to hear what God is saying to you. You can't know what He commands if you're spiritually dead. This is why studying His word is vital to seeing the manifestation of His promise in your life because His word is the food for the spirit.
The way to the manifestation of His promises and getting to our promised land is by following His instructions ONLY.