Hebrews 6:13-15 (NIV) 13 When God made his promise to Abraham, since there was no one greater for him to swear by, he swore by himself, 14 saying, "I will surely bless you and give you many descendants." 15 And so after waiting patiently, Abraham received what was promised.
God's promises to us never fail. The problem for us is that when we do not see the fulfilment of His promises within what we perceive to be the proper time table, we fret and doubt. But, it is not our time table that matters, for God's plan for your life is perfect. Be patience and allow Him to see His plan for you through to fruition on His time table, and not your own. Abraham did that and it made all the difference in the world.