When manifesting anything, it's important to know that you will manifest according to how much you feel you're worth.
You not just manifest what you believe, but also how much you're worth.
If you don't believe you're worth the millions, the beauty and health, and all the abundance and wellness that you want, then no matter how much you believe you can get it, you won't. Why? Because you only theoretically believe you can get it, just as you theoretically believe you can become just as smart as Einstein or as rich as Bill Gates if you put all your faith and attention into LOA. You don't actually believe that all your mind and intellect, all your personality and soul, all your body and physicality etc., is worth every ounce of whatever you want.
Do you think you're worth what you want? Do you not just believe you can get what you want, but also believe that you must get what you want because you're worth exactly what you want? Do you really believe with all your heart, mind, and soul that you have that intrinsic value of whatever you want right inside of you, and that the world cannot take away from you, no matter how much it tries to?
If you do, then you have nailed it. It must manifest. That is the Law of You - you are the LOA itself, and you manifest exactly who and what you are, and not just those teeny weeny objects that you compartmentalise as a million bucks, a sports car, the perfect eyesight, a slim figure, etc.
How much you think you're worth will determine how many desires you can manifest.