If I had just one piece of investing advice to give you ...

One thing you must know in order to survive and prosper as an investor throughout any time period, bull market or bear ...

One investing advice few investors understand and really know ...

An advice you will not easily be able to explain to your friends or family ...

An advice that people simply will not want to accept its truth ...

An advice that the greater majority of the professional investment community really doesn't want you to know, because if you understand it, you will not be a very profitable client to them ...

An investing advice, which is well-known among the best investors and perhaps, you too will not want to accept it ...

The following would have been my best investing advice:

Investing Is a Loser's Game -- Never Forget that!

What determines investing success and what determines failure? Are there principles that can be understood to help the individual invest more successfully?

I believe that the best principle that can be adopted by the individual investor is to ignore the market, minimize trading expenses, think a bit like a business owner, invest long-term, and, most crucially, know his/her limitations as an investor.

Investing Is "A Loser's Game!"

It is a loser's game, not only at the amateur level, but also at the professional level. Over time, trying harder to achieve superior returns will usually lead to inferior ones.

Playing investing like a loser's game means taking advantage of long-term compounding, diversification, managing risks, and controlling the urge to get involved in speculative excess.

If you understand only this single concept, that investing is a loser's game, you will do well as an investor throughout your life!