The 36-year-old actress admits her background growing up in a trailer park has made a different to the way she thinks and she never lets a sale pass her by because she understands the value of money.
She said: "My background is not something I forget. It helps me not take what I have for granted.
"I really appreciate that I get to travel and see the world, and that I can pay my bills. It`s an incredible feeling to know that I can actually buy that pair of shoes, and I appreciate a sale as much as the next person.
"I think about how I am spending my money, and I like to spend on my family."
The `Conviction` star also believes the love of her mother Judy helped empower her to succeed.
She said: "My mom`s belief in me was the biggest gift I ever received. Nothing will trump that because she instilled in me that there was nothing I couldn`t accomplish if I worked hard enough.
"She didn`t give me false expectations that fairy dust was going to be thrown over me and suddenly all my dreams would come true."
Hilary has previously revealed she is a big fan of saving up coupons and money-off vouchers for shopping expeditions.
She told You magazine: "I would use a coupon - just because I have some money now, I wouldn`t? That doesn`t make sense to me. I see it as a dollar in my pocket. People around me laugh, because I have a deep understanding of what a dollar gets you and how far to make that dollar go.
"I really appreciate that I get to travel and see the world and that I can pay my bills. It`s an incredible feeling to know that I can actually buy that pair of shoes."