Mailing letter to myself

For a reasons I will explain later, I needed to send a letter via Postal Mail to myself.

So with envelop addressed, I was just going to send it empty.  Then it got me thinking....

If I got a letter "from myself", what would I want it to say?

I quickly wrote down (without over thinking it) a note to myself.

Dear Michael,

Hi, just a quick note to tell you to Focus, Be Wise, Smile, Enjoy Life!

Love, Me !

It was a good exercise.  What would you write???