My mom lied about how credit cards work, but I'm glad — it helped me make good choices with how I use them today

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• When I was a kid, my mom told me credit cards could only spend money we already had.
• Once I realized that was a lie, though, I decided it was a good strategy for my own finances.
• I use my credit cards strategically, and I only have three of them at any given time.

When I was a kid, my mom lied to me and said that credit cards were the same as debit cards. She made it very clear that before using either card, it was important to double-check that we had the cash available in our bank account to afford the items.

At the start of our shopping trips, she would tell me how much we could afford to spend. Then, rather than mindlessly piling items into the cart when we'd stroll around department stores, she'd ask me to hold a calculator and add up what we intended to buy.

By the end of the trip, she'd hand me a credit card and tell me that it was preloaded with the exact amount that we had budgeted for this trip. I spent a good part of my childhood thinking that was how credit cards worked.

At 18, the lie wore off. I got my first credit card and understood that it was very different from a debit card. While I could borrow money to afford a couple thousand dollars worth of purchases, the longer it took to pay off those transactions, the more interest I'd have to pay.

Having the mindset that my credit card was the same as my debit card helped me stay out of debt over the years. Here's how my mom taught me to have a good relationship with credit cards.

1. I don't treat credit cards as a way to borrow money

I have never viewed my credit card as a means to access borrowed money. Instead, I have always viewed it as a debit card that comes with added perks, like cash back or travel rewards. Whenever I needed to make a big purchase, I waited until I had enough money in my savings account so that I could buy it with my credit card and pay it off in the same billing cycle.

To avoid overspending or pulling cash out of my emergency fund to cover a higher-than-usual credit card bill, I've gotten in the habit of checking up on my finances weekly. Every Sunday, I'll look over my credit card statement to track and assess my spending. I'll also take a pulse on the rest of my finances, from my savings account balance to upcoming bills that I know I'll be hit with (from rent to utilities or health bills) to update my spending balance for the month.

Keeping a close eye on my credit card spending has helped me control overspending and instead stick to a realistic budget based on my overall cash flow.

2. I use my credit cards strategically

Over the years, there have been a few instances when I had to use my credit card to cover costs that I couldn't afford at the moment. But even before I used my credit card to cover those costs, I had a plan for how I was going to pay off the balance without incurring high interest.

For example, in 2016, I was laid off from my full-time job and had to move to a new apartment. The move came with a lot of costs that I didn't have the cash for at the moment. My credit card balance was a couple of thousand dollars, and my interest rate was over 20%. I knew that once I started working again I could save money from the steady paycheck to pay off this balance in just a few months.

I opened up a new credit card with 0% APR and no annual fee. I did a balance transfer and moved the balance to this new card. Because it wasn't incurring any additional interest, I was able to pay off the balance in less than 6 months without having to pay any extra fees or costs.

While this isn't something I do often, it has helped in emergency situations.

3. I limit how many credit cards I have

Since my mom instilled a very strict set of parameters around credit card usage when I was a kid, it made me shy away from opening up a lot of credit cards. I had a rule for myself that at any given time, I would only have three active credit cards that I use. One is for personal use, one is for my business, and one is a joint credit card that my husband and I use together.

Having a limited number of credit cards makes it easy to track spending and allows me to stick to the mindset that credit cards are like debit cards. I prefer to act like my mom was telling me the truth about credit cards. It's helped me stay out of debt, keep a close eye on my spending, and prevent me from becoming an impulsive shopper.