It's really just as easysurfer replied above.
1. Start using the credit card for all in-person expenses. I carry very minimal cash. I get $100 at an ATM about every 3 months or so. I pay for almost everything with the credit card. Gas, groceries, dining out, etc. I even use my card to buy $1.00 Diet Cokes at the McDonalds drive thru. Some places don't take them... my barber, my local garden market, etc. That's where I spend my cash.
2. If any of your recurring bills accept credit cards, switch them over to it and set them up as autopay from the credit card. For me this includes my cable internet, electricity, phone, AAA, health insurance, software/website subscriptions (streaming music, streaming TV, cloud storage, virus scan for computer, etc.).
3. Any bill that doesn't allow for autopay, but accepts a credit card, I just let them email me or paper bill me when due and I sign into their website and pay it when due. This covers my homeowners/vehicle/umbrella insurance.
Look back thru the debit card statements for 3 or 4 months. What is on that list that could be set up for autopayment from your credit card?
Once set up, it all sort of goes on auto pilot. These credit card rewards, whichever one(s) you use can really add up. As long as you're disciplined enough to pay the cards off every month and have the finances to do it, there is no reason to not do it.
I primarily use my PNC credit card for 4% off gas and 3% off restaurants. I use another card for everything else. That other card may vary depending on whether I'm chasing after a promotional bonus or not. If not chasing a promo, I use the Citi 2% cash back card. For the last 3 months, I was chasing 100,000 points on the Chase Sapphire card. I switched all the credit card purchases, including gas, restaurants, and all autopays over to that card for 3 months to get $4000 in spending. I got my 100,000 points. Now I will likely revert back to my normal patterns of using 2 cards. That 100,000 points could get me a round trip ticket business class ticket to Spain right now if I chose to use it. I'll likely leave the points in the account for now, and maybe add to it a little with normal spending. I'm still trying to decide what I want to do with it.
I don't really like to be CONSTANTLY chasing a bonus. But now and then, one comes along that is too good to pass up. I'm generally content to get the 4/3/2% cash backs from my 2 primary cards.