How about, instead of technology, a good vocal coach?

Get professional help, and bad habits get pointed out and squashed far faster than going your own way. Good breathing, good posture, good habits for stamina... a good vocal coach will teach you all this in a fraction of the time it would take to pick it up yourself (if you EVER did).

We are never too old to learn, aren't we...?
_________________________
An arranger is just a tool. What matters is what you build with it..!