There are many management rules, but most of them are locked behind bars. It is very risky to whisper about management rules; it is even more hazardously to be open about management rules.

This rule however is harmless, yet effective. It is so simple, that most people forget to use it.

To perceive the strength of it you only have to think about some of the latest issues, either private or business, you have been dealing with regarding spending money on different presents or small investments.

You had for example 100 dollars to spend. Your budget. Then you went shopping and you started buying. Just before closing hour you saw this remarkable present. In fact you were looking for it for some longer time, but you had forgotten about it.

And then you remembered that you had spend 95% of you budget. And this particular item needed a lot more than the five percent that was left in your pocket.

So now you will say,