Taking to her Instagram on Saturday, the country singer shared a photo of herself stretching her arms out on a boat on what would have been the sixth wedding anniversary with her estranged husband.
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"Free. And not looking back.," she captioned the snap. "I thought not celebrating 6 years today would feel heavy and sad....and though there is sadness in the broken, there is more joy, happiness, freedom and self love than I've ever experienced."
"The weight has been lifted and I welcome the unknown, because there is so much beauty in what's next. Find your strength and set yourself free..."
In an interview with EXTRA on Monday, host Billy Bush asked if she found out about Mike's alleged infidelity through DMs and "cell phone stuff." Jana claimed, "That and some more... Let's just say it was bad enough that I had no choice."
"He knew if this one thing happened, he knew that I was gone," she added. "He made his bed. I wish he would have thought of the family and all the work we did. I hope he gets the help he wants and needs."
This comes just a few days after Jana took to Instagram to reveal the results of her breast augmentation, which she said she had done before she filed for divorce.
"Two weeks before I found everything out, I got a boob job," Jana recalled to Billy. "Again, I didn't plan on this to happen… Now that I'm healed, I'm like, 'I got a divorce body, okay?'"
The former couple -- who share daughter Jolie, 5, and son Jace, 2, -- have been open in the past about Mike's repeated infidelity.