Stop being bitter because your breakthrough has taken longer than you'd expected. Stop being bitter because they chose them over you. Stop being bitter because the competition makes it more difficult for you to get a gig.
Take it as an opportunity to improve your work, your character and your expectations. Take it as a sign that if you want to be selected, you need to be better.
Don't hide your head in the sand and pretend that everyone else is blind to your talent.
Maybe you haven't actually proved how talented you are.
The best way for talent to be released is by showing up and doing the small things each and every day. Sometimes for years. Then sometimes, they still won't notice.
But sometimes, they do.
So commit to excellence and commit to it daily.
Your opportunity will come.