This reminds me of Moses. Consider when he fled from the land of his birth, and the only family he'd ever really known, who had provided all the riches and comforts anyone could hope for. He set out across the unforgiving desert, alone. How frightening the nights must've been, hearing the animals but not seeing them, alone in the dark, with no shelter in which to hide himself. What did he eat? How did he find relief for his parched throat?
Trudging along in the sand, how his legs must've ached! But he kept on, moving forward, not even realizing he was being strengthened in the trials and the hardships for God's own purpose. He never realized the lessons he was being taught would be used as the Lord continued to teach him to rely only on Him and His spoken word as he would later lead his people out of slavery and point them in the direction of their promised land.
If we persevere in our walk with Him, relying on the Holy Spirit as our guide and our strength, who knows how God might use any one of us for the glory of His Kingdom?