желаю всего самого лучшего

I have just read "желаю всего самого лучшего" in my Russian textbook.

Usually I see желаю всего хорошего. I also see in желаю всего самого хорошего, which makes sense, too, because самый + adjective is superlative (the best), and лучший is already meaning "the best".

So any thing special in "желаю всего самого лучшего"?
I am just thinking if there is any grammar point I haven't studied before. Though it may be simply just an emphatic version of самого хорошего.

You can think about "самого" as "the most good/bad (from context) things from the set". "Самого лучшего" = "the most good things from the best things". Superior of superiors. Nothing special about it.