It's interesting that it is mentioned in the Bible that cowards aren't allowed into heaven.
"But the cowardly, the unbelieving, the vile, the murderers, the sexually immoral, those who practice magic arts, the idolaters and all liars--their place will be in the fiery lake of burning sulfur. This is the second death." (Rev 21:8)
Cowardice is something that isn't really tolerated in a child of God. Yes, the meek shall inherit the earth, but meekness doesn't mean cowardice.
It's a verse that often tells me to do the brave thing and not to let fear rule over me.