"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."
Joshua 1:8 (NLT)
God is not solely responsible for your success but more importantly God is your source of success. God has given us a choice and instructions, that is to choose God's way of success or not. Verse 8 in NLT version uses the condition, "Only then". Obeying God's way will enable success in all we do. The struggle is whether we can accept His ways with His instructions.
Success in all that we do is about doing things His ways and will yield positive results.
Teach me to understand and desire your Ways and be willing to submit to You, Lord.