From www.godsminute.com

Ask and it will be given to you; seek and you will find; knock and the door will be opened to you. For everyone who asks receives; he who seeks finds; and to him who knocks, the door will be opened.
(Luke 11:9-10 *NIV)

Those are the words of our Savior Jesus Christ. Jesus also said; If you remain in me and my words remain in you, ask whatever you wish, and it will be given you.
(John 15:7)

Now these verses do not mean that everything we may ask for will be given to us, but do mean that if it is God's Will for us it will happen! After all we may ask for something that would hurt us in the end, for we have no way of knowing the future.

So when you pray do not be afraid to ask God for something that you desire, knowing that He who knows all is looking out for you. For God has said; then you will call upon me and come and pray to me, and I will listen to you. You will seek me and find me when you seek me with all your heart.
(Jeremiah 29:12-13)

Also do not think that God has abandoned you if a prayer isn't answered the way you would like. After all, in time you may look back on that prayer request and say, "Thank goodness, God Didn't Answer That One!"

Therefore, never lose hope when you pray for it is written; the prayer of a righteous man is powerful and effective.
(James 5:16)

So; pray continually; give thanks in all circumstances, for this is God's will for you in Christ Jesus. Amen.
(1 Thessalonians 5:17-18)