When you feel like God can't use you, Remember -

Abraham was too old
Isaac was a day dreamer
Jacob was a liar
Leah was ugly
Joseph was abused
Moses had a stuttering problem
Gideon was afraid
Samson had long hair and was a womanizer
Rahab was a prostitute
Jeremiah and Timothy were too young
David had an affair and was a murderer
Elijah was suicidal
Isaiah preached naked
Jonah ran away from God
Naomi was a widow
Job went bankrupt
Peter denied Christ
The disciples fell asleep while praying
Martha worried about everything
The Samitan woman was divorsed more than once
Zacheus was too small
Paul was too religious
Lazarus was dead.

Now, no more excuses! God can use you to your full potnetial. Besides you aren't the message you are just the messenger!