Оформил: DeeCo
Автор: http://www.swissdelphicenter.ch

type
   ISelfDestroy = interface;
   //forget about GUID, if you are not using COM 

  TSelfDestroy = class(TInterfacedObject, ISelfDestroy)
   private
     FObject: TObject;
   public
     constructor Create(AObject: TObject);
     destructor Destroy; override;
   end;


 implementation


 constructor TSelfDestroy.Create(AObject: TObject);
 begin
   FObject := AObject;
 end;

 destructor TSelfDestroy.Destroy;
 begin
   FreeAndNil(FObject);
   inherited;
 end;


 // So when you use, just do like this... 

procedure TForm1.Button1Click(Sender: TObject);
 var
   MyObject: TMyObject;
   SelfDestroy: TSelfDestroy;
   begin
   MyObject    := TMyObject.Create;
   SelfDestroy := TSelfDestroy.Create(MyObject);
   // The MyObject will free automatically as soon as TSelfDestroy 
  // goes out of scope. 
  // Carry on your code here... 
end;