... the book of Joshua begins with a conversation that the LORD has with Joshua.  Moses has died, and Joshua is now in charge of the descendants of Jacob, the ancient nation of Israel, and they are being instructed to enter the 'promised land'.  Joshua is the sixth book of the Hebrew TaNaCh (Torah {Book of the Law}, Nevi'im {Prophets}, Ketuvim {Writings}) or Old Testament.  the first five books are known as the Torah, or the Book of the Law.

... so right before they go into the land promised to Abraham, the LORD says to Joshua and the people;

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 good success.” (Joshua 1:8, ESV)

... i want to succeed.

... i want to be prosperous.

... i believe that true success and true prosperity can only be measured by understanding the intent of the creator.  i believe the ancient scriptures are a guide as to what those intents are and have always been.

“I will meditate on thine ordinances: I will not forget thy words.”
(Psalm 118:16, Brenton LXX En)

... i believe the promises.

Thy hands have made me, and fashioned me: instruct me, that I may learn thy commandments.
They that fear thee will see me and rejoice:
for I have hoped in thy words.
I know, O Lord, that thy judgments are righteousness,
and that thou in truthfulness hast afflicted me.
Let, I pray thee, thy mercy be to comfort me,
according to thy word to thy servant.

(Psalm 118:73–76, Brenton LXX En)