Proverbs 28:25 "….. he who trusts in the LORD will be prospered." As I look through the Bible I see the ones God calls 'Successful' are not people who do not go through adversity, but they are people who go though adversity and remain loyal towards God; that is they kept their focus on pleasing Him.
Joseph was called a "Successful" man in spite of the servere trials her went through. Genesis 39:2-3, Genesis 39:21-23.
Daniel was another who prosered in spite being a captive to a enemy of Israel. Daniel 6:28.
Hezekiah did what was right 2 Kings 18:3. He trusted in the Lord 2 Kings 18:5. He 'held fast to the Lord 2 Kings 18:6. Then it says in verse 7 'The LORD was with him; he prospered wherever he went.'
Matthew 6:33 "But seek first the kingdom of God and His righteousness, and all these things shall be added to you." Pleasing God must be the central focus of out being. Every kind of success follows after that.
Deuteronomy 30:20 "….cling to Him, for He is your life" There is no success apart from that.
Keep Pleasing Him!