God clearly wants us to enjoy His prosperity and His success as He is very generous, and can give richly because He is rich in the fullest sense.
What God ask us of us to experience His divine prosperity and success is good stuff.
8 "This book of the law shall not depart from your mouth, but you shall meditate on it day and night, so that you may be careful to do according to all that is written in it; for then you will make your way prosperous, and then you will have success." NASB
Meditating on God's Word during the day and night gets God's Word inside of us in a practical useable way (meditation is going over the Word several times in our hearts). If we think about God, we will think about Him, versus ignoring Him throughout the day.
Obeying God's Word get God's Word out of us through our actions in real life situations. Obedience to God's Word is the practical outcome of meditating on God's Word.
Meditation plus Obedience results in God's prosperity and good success.
No one can take it away from you, and you get it, and enjoy it without regrets or shame (cf. Prov. 10:22).
God's prosperity and success is much more than the accumulation of cars, clothes, homes, money, and other assets. It is not limited to a small group either, but for everyone who is serious about taking God at His Word.
Just practice Joshua 1:8, and experience it for yourself.
Pastor Kennesy (MZO)