It is like weight loss, there are so many paths, so many things that can work.
Want to know the secret to both? It is a super simple thing.
Decide.
That's it.
Not, I want to get my voice right.
Not, I will work on it.
Except no other alternative.
Voice is something we can all do something about with the only exception being damage due to injury or illness. You CAN do this.
Do what it takes, that is how we get anything in life.
That is for everyone really, so many of us struggle with the voice.
There is sooooooo much information and so many voice coaches that I don't think that I could add more. There is one thing, your voice box is an instrument. Like any instrument changing the shape changes the sound, thinking of it like that helped me tremendously. Of course I had to tweak it occasionally and I still work to try to improve it.
It takes work.