I have discovered The Secret

 Dear Most High Chief Druid,

c/o The Bardic Circle

I am writing to request admission into The Elite, those members of the Welsh fraternity that are aware of The Secret.

I only found out about it yesterday so I am wasting no time in applying. My studies of the Welsh language revealed to me the fact that the Welsh word for week (wythnos) in fact means eight nights. 

Although I am born, bred, and live in Wales I have for sixty-seven years lived every week with only seven nights. I want my fair share of extra sleep time!

Please arrange my investiture into The Elite as soon as possible so I am to catch up with my sleep.

Yours in sleepy anticipation.

P.S. And while you're about it maybe you could explain why there are so many words for yes and no.