Read More on Measuring?

Why you must measure your investing performance and express it in numbers? 

XIRR, CAGR, ROC, Win/Loss, Win $/Loss $, etc

Number, Number, Number!


When you can
measure what you are speaking about, and express it in numbers, you know
something about it
; but when you cannot measure it, when you cannot express it
in numbers, your knowledge of it is of a meager and unsatisfactory kind; it may
be the beginning of knowledge
, but you have scarcely, in your thoughts,
advanced it to the stage of science.

Sir William Thompson, Lord Kelvin (1824-1907)