This is free at
http://they.misled.us/dark-room
But unfortunately any and every s/w is still under your control and you will end up turning it off after a while (or a few days).
The real s/w that needs to be controlled is the one that runs our bodies and lives - "Our Mind" and for that I can recommend The Power of Positive Thinking by Dr. Norman Vincent Peale. A must and an excellent read!