Abraham & Sarah

There are times in our life where we want something and times where we need something. And it is always hard to tell the difference between the two. Take Sarah, Abraham's wife, for example. She wanted a baby so bad, that she told Abraham to take her handmaiden(servant) Hagar, and make a baby with her, so she could have a child. The Lord has already promised Sarah that she and Abraham will have a baby, but she has no patience with the Lord's time. Hagar refuses at first, but when the Lord commands her to obey Sarah Hagar finally agrees. Then Hagar actually becomes pregnant, and Sarah herself still can't, Hagar begins bragging and making Sarah's life even more miserable than it was before! Hagar has Ishmael, and is told he will be a wild man, and that his hand will be against every man, and every man's hand will be against him as well! (Genesis 16:12) Sarah is commanded again to be perfect because she is promised a child. Hagar and Ishmael continue to make Sarah's life miserable, until she finally gives everything to the Lord, and becomes pregnant with Isaac.
Isaac, ofcourse, is a wonderful child and grows up to make both of his parents proud. The lesson we can learn from this is that when we try to force our wants on the Lord things never turn out right, and we cannot be truly happy. It is only when we allow the Lord to direct our lives and trust him completely that we can find peace and happiness.
Is that easy? NO. And it never will be. Sarah had to endure years of pain and anguish before she was granted her hearts desire, and even then she had tried to do it by herself. "I cannot wait for you Lord, I need to do this myself!" That way only brought her suffering though.
I do not know how to give it all to the Lord. I have wants and needs that I feel are not being met, and everytime I think I can let the Lord be my guide, I hold on to a string of that wish so that I can still control it.
We cannot do anything without the Lord. He has made everything, including the world and all its inhabitants. How can we think that he cannot do for us?
I pray we may all be able to learn to give our lives to the Lord completely that we may all find true happiness in this life, and the one to come.