When we walk with the Lord, he sustains us. It can be an arduous journey and we may falter... but God is able to see us through.
When we walk our own path, when we walk away from God completely and rely on our own strength in moments of foolishness... we may land flat on our face. However once the lesson is learned, grace is there for us. God will always pick us up again once we turn to him.
Maybe you have stumbled, maybe you have fallen. Whatever the case may be... this is true for you... there is faith, there is hope and there is love. They are all divine gifts for you.
You can still rise.
Read the lyrics to the DC Talk song "What if I Stumble"- here, if you feel it would be of further benefit to you where you presently stand.