Whitney Houston - When You Believe

miracles - actions or events believed to be caused by God, which is impossible according to the ordinary laws of nature
frail - something that is frail is easily damaged or broken [= fragile]
achieve - successfully complete something or get a good result, especially by working hard
prove in vain - (prove to) be without purpose or positive results
seek - try to achieve or get something
faith - a strong feeling of trust or confidence in someone or something
when - at the time
give in to - no longer try to stop yourself from doing something you want to do
resilient - able to become strong, happy or successful after a difficult situation or event