The apostle Paul says some very certain words and that is that we go through strong moments where our strength runs out and we can no longer:
3 Praise be to the God and Father of our Lord Jesus Christ, the Father of compassion and the God of all comfort,
4 who comforts us in all our troubles, so that we can comfort those in any trouble with the comfort we ourselves receive from God.
2 Corinthians 1:3-4
Paul went through many difficult moments like the disciples, if we read very carefully we will find, the difficulties that the disciples went through preaching the salvation of the Lord and taking the word of God throughout the world.
But the good thing about all these parts is that when some of the disciples went through problems, they called God and also when the apostle Paul was in these moments he went to call God so that He would strengthen him at that moment.