While keeping a process up is useful, it would be even better if we could make sure our process was behaving well and restart it when resource utilization exceeds our specifications. With a few additions, we can easily have our process restarted when memory usage or CPU goes above certain limits. Edit your sample.god config file to look like this:

God.watch do |w|
  w.name = "simple"
  w.start = "ruby /full/path/to/simple.rb"
  w.keepalive(:memory_max => 150.megabytes,
              :cpu_max => 50.percent)
end

The 'sample.god' should be 'simple.god', I think this is typical misspelling.