"What motivates me? My trolls, my enemies, all the people who constantly try to bring me down to their level," she wrote in the caption.
"And yes my phone case does say 'Love Yourself', because everyone should be reminded of this daily," she added.
And in an earlier post, Lauren detailed exactly what she had done to lose weight.
"I go to the gym four to five days a week, I walk everywhere, I eat a balanced diet and I take weight management supplements," she said at the time.
In the 2019 season of MAFS, Lauren was left heartbroken after her husband Matthew Bennett confessed to the other grooms at a dinner party that he wasn't attracted to her.