Over the last few years, Selena Gomez has been increasingly candid about her own mental health journey. But though she may make honesty look easy, the Rare Beauty founder, 28, acknowledges it’s been difficult at times to share her toughest moments with the world.

[Being open] isn’t an easy thing to ask of someone. I’ve had to go away a few times for stuff I didn’t know [I was struggling with] and was confused by,” the singer — whose highly anticipated beauty line drops Thursday — tells PEOPLE exclusively. “And then this stigma came: What would people think? But when I thought about it, my first answer was, ‘I don’t care, this is my truth.’ I’m not a stigma. I’m a person that walks their life.