Faithfully following God does not guarantee prosperity. Actually, it is often the opposite. How shocked Abraham must have been when, after obeying God by forsaking the land of His fathers and entering the good land, a famine immediately came. The Apostle Paul faithfully fought the good fight to the end, but endured poverty, hunger, nakedness, whippings, shipwrecks, and numerous troubles. Thankfully, he did not judge his course by the presence of outward blessings. The apostle John ended his life of faithful service in banishment, calling himself "a joint-partaker in the tribulation...in Jesus." (Rev. 1:9 Recovery)
Contrary to our natural thought, God does not necessarily reward faithfulness with outward blessings.
This hymn's author asks, "Who then will chose God's best, and take the narrow track?"
God's blessings are inward and spiritual. If we endure, we are rewarded with "every spiritual blessing in the heavenlies in Christ!" To choose God's best is to be inwardly blessed.