The ''secret I've been pretending to be poor for 6 years

My family thinks we're struggling. I let them. Truth is I make 6 figures and have 80k saved. I grew up with nothing and the fear never left me. So I drive a 2008 car, say no to trips and send my mom money ''anonymously''. They would be so hurt if they knew I could have helped more. But I'm terrified that if I stop pretending, I'll go broke and loose everything.