Joshua 1

'"Be strong and courageous, for you are the one who will lead these people to possess all the land I swore to their ancestors I would give them. Be strong and very courageous. Be careful to obey all the instructions Moses gave you. Do not deviate from them, turning either to the right or to the left. Then you will be successful in everything you do. Study this Book of Instruction continually. Meditate on it day and night so you will be sure to obey everything written in it. Only then will you prosper and succeed in all you do. This is my command—be strong and courageous! Do not be afraid or discouraged. For the Lord your God is with you wherever you go.'" v. 6-9
Many people think that prosperity and success come from having power, influential personal contacts, and a relentless desire to get ahead. But the strategy for gaining prosperity that God taught Joshua goes against such criteria. He said that to succeed Joshua must
1. be strong and courageous because the task ahead would not be easy
2. obey God's law
3. constantly read and study the Book of Instruction - God's Word - The Bible
To be successful, follow God's words to Joshua. You may not succeed by the world's standards, but you will be a success in God's eyes - and his opinion is most important.

Taken from the NLT Life Application Study Bible