Thank you, Glen! Can I verify that I understood you correctly? Do you mean that in all situations, even if I know what to do, I should ask God to show me the right, or His way to deal with this situation? And more, if I don't know - I should go to God for help?
I think it is wise to consider God's will in every choice that we make.
What I am saying is that you don't sacrifice being "spiritually poor" by being mature, as you have described it.
This, being "poor in spirit", as I understand it, means you recognize your need for God, and his salvation.
If you already know the best way to deal with a situation, then you have wisdom in that regard.
But you realize that this wisdom is from God. It is His gift to you. It has it's origin in God. It is God who is rich is Spirit.
Without His generousity, we have nothing. We are poor in spirit. Thus we seek his Kingdom and find it.