I am your constant companion.

I am your greatest helper or your heaviest burden.

I will push you onward or drag you down to failure.

I am completely at your command. Half the things you do, you might just as well turn over to me,

And I will be able to do them quickly and correctly.

I am easily managed; you must merely be firm with me.

Show me exactly how you want something done,

And after a few lessons I will do it automatically. I am the servant of all great men

And, alas, of all failures as well.

Those who are great, I have made great.

Those of you who are failures, I have made failures. I am not a machine, though I work with all the precision of a machine

Plus the intelligence of a man.

You may run me for profit, or run me for ruin

It makes no difference to me. Take me, train me, be firm with me

And I will put the world at your feet.

Be easy with me, and I will destroy you.

Who am I? I am HABIT!