How can I end my letters with a standard ending with yours.. and

[Alnasir]

How can I end my letters with Yours sincerely and my name automatically every
time?

 

[Jay Freedman]

How can I end my letters with Yours sincerely and my name automatically every
time?

Create (or download from the Office Online web site) a template that you use
specifically for creating letters. Include the closing and signature as part of
the template. Whenever you use the New command and choose that template, the
desired text will be there.

 

[DeanH]

In addition to Jay's comments, you can also create what you want, then create
an Autotext entry, Alt+F3, enter a unique name, enter, that is it.
For more on AutoText, see
http://word.mvps.org/faqs/customization/AutoText.htm.
Hope this helps
DeanH