Scripture and a question

When the disciples saw him walking on the sea they were terrified.
“It is a ghost,” they said, and they cried out in fear.
At once Jesus spoke to them, “Take courage, it is I; do not be afraid.”
Peter said to him in reply,
“Lord, if it is you, command me to come to you on the water.”
He said, “Come.”
Peter got out of the boat and began to walk on the water toward Jesus.
But when he saw how strong the wind was he became frightened;
and, beginning to sink, he cried out, “Lord, save me!”

How many times have we been given a yoke by the Lord and our pride, fear or complacency have caused us to fail ?