What is your favorite Lanza song?
In 1950, he was in the film,  The Toast of New Orleans,  featured the  popular song "Be My Love", which became  his first million-selling hit.
It also was nominated for an Academy award.
yes, with David Niven and then a very young, Rita Moreno, one of the very few performers to win an Oscar, an Emmy, a Tony and a Grammy, thus becoming an EGOT.
Lanza also earned $50,000 for his role in the movie.  Twice what his original contract provided. I could only imagine that kind of money back then.
In a 1977 interview , his  biographer recalled that the tenor was insecure about the manner in which he had become successful, and was keenly aware of the fact that he had become a Hollywood star before first having established himself on the operatic stage. How much more success he could have had if he had only disciplined himself to his craft.
That is true.  He was stated to live a life of excess in alcohol and binge eating.  Being more disciplined could have opened more doors for him.
you are correct.  His addiction to food and alcohol had serious consequences to his health.  Hollywood columnist Hedda Hopper wrote that "his smile, which was as big as his voice, was matched with the habits of a tiger cub, impossible to housebreak."
He had a successful career in his short life.  Eight movies in ten years and selling tens of millions of records only to die at the young age of  38.  It is a shame.  He was known to be rebellious, tough, and ambitious.
His life, while amazing, was sadly tragic.   His star blazed like a meteor whose light lasted only a brief moment in time.  A voice such as his, has been said to surface only once every 100 years.