Seems like I've heard that somewhere before... (And, of course, I agree!)
A friend once pointed out to me that he could time twenty seconds exactly without using his watch -- and he did...repeatedly. He used the principle that the recital of the source of your 'prayer' (in English, at a 'normal' rate) takes exactly twenty seconds.
Give it a try. Even if your timing is a bit off -- you have done something worthwhile! '-)
ref.. #57
IMHO, we Christians ought to meditate on it every day - word by word and thought by thought.
For instance, the reason or meaning of life - His name, His kingdom, His will. And Christ is the bread of life, our daily bread etc...