Thanks You Notes For Coaches How Do I Sing Higher Notes?

How Do I Sing Higher Notes? - thanks you notes for coaches

I wonder how to sing higher notes. I'm actually a decent singer, but I wonder how the high notes, as if struck some of my favorite bands. As the lead singer of Incubus. I know, do a singing teacher, a miracle, but something I can do at home or on the shower:)? Thank you.