public function runUpdate(Request $request)
    {
        $user = User::find(Auth::id());
        $this->validate($request, [
            'old' => 'required',
            'password' => 'required|min:8|confirmed',
        ]);
        if (Auth::attempt(['name' => $user->name, 'password' => $request->old])) {
            $user->fill([ 'password' => bcrypt($request->password) ])->save();
            $request->session()->flash('success', 'Your password has been changed.');
            return redirect('/my-profile');
        }
        $request->session()->flash('failure', 'Your password has not been changed.');
        return redirect('/my-profile');
    }