As many heads as a Hydra, and as many lives as a cat!

(John Newton)

Beware of SELF! This is the worst enemy we have to deal with!
  Self-will,
  self-wisdom,
  self-righteousness,
  self-seeking,
  self-dependence,
  and self-boasting.
It is a large family — and I cannot count up all the branches! They are all nearly related to Satan — and they are all a sworn enemy to our peace.
If we lie low — then the Lord will raise us up.
But if we will be something — then His arm will surely pull us down.

That monster SELF has as many heads as a Hydra, and as many lives as a cat! It is more than twenty-five years since I hoped it was fast nailed to the Cross! But alas, it is alive — and still mixing with and spoiling everything I do!

(N.B. The Hydra was a serpentine mythological water monster with many heads.
 For every head chopped off — the Hydra would re-grow a couple of new heads.)