"Fear thou not; for I am with thee: be not dismayed; for I am thy God: I will strengthen thee; yea, I will help thee; yea, I will uphold thee with the right hand of my righteousness."
To me, this was just another reminder of God's faithfulness. I often wonder why I get worried so easily about such little things. God holds the whole universe in His hand and nothing ever happens that He is unaware of. He knows all things, all our worries, trials, and problems. We don't need to doubt that He will allow anything to befall us that we can't handle or that's not in his will, even if we don't always understand. He that has begun a good work will bring it to completion and all things work out for good to those that love Him.
"And when he had called the people unto him with his disciples also, he said unto them, Whosoever will come after me, let him deny himself, and take up his cross, and follow me. For whosoever will save his life shall lose it; but whosoever shall lose his life for my sake and the gospel's, the same shall save it. For what shall it profit a man, if he shall gain the whole world, and lose his own soul? Or what shall a man give in exchange for his soul? Whosoever therefore shall be ashamed of me and of my words in this adulterous and sinful generation; of him also shall the Son of man be ashamed, when he cometh in the glory of his Father with the holy angels."