Reset Identity Column in SQL Server Database Table

I HAVE CREATED IDENTITY VALUE FOR COLUMN ID IN TABLE..

IDENTITY(1,1)..

IF I DELETE RECORD ID 11..AND NEW RECORD ..ID IS TAKEN 13 NOT 12..

I USE TO RUN SQL QUERY

DBCC IDENTCHECK('TABLENAME',RESEED, 11)

EVERY TIME..

HOW TO AUTOMATICALLY RESEED COLUMN VLAUE..