Hear my prayer, O Lord,
and let my crying come unto thee.
Hide not thy face from me in the time of my trouble;
incline thine ear unto me when I call; O hear me, and that right soon.
For my days are consumed away like smoke
and my bones are burnt up as it were a fire-brand.
My heart is smitten down, and withered like grass
so that I forget to eat my bread.
The reading for Mass does not include 3 and 4 ("For my days," etc.). But I'm including them because I think they're pretty powerful.