How does one recover from failure?

It’s easy for me to find myself stuck thinking about the multiple mistakes, failures and opportunities I missed in the past.
This is a painful and energy draining habit, so for years I’ve been working on changing this perspective.
To answer your question, how does one recover from failure?
Today, instead of me dwelling on the regrets of my past, I now focus on how these multiple life experiences have shaped my character and made me stronger to succeed.
It’s a decision!