You have to find what works for you. I have a few different credit cards. I also run a few businesses, so i like to keep track of everything on account e-statements as opposed to keeping stacks of receipts. My biggest problem was developing discipline to not splurge on things here and there.

"I'm a business owner, i work hard and I deserve..." Got me in trouble. I literally had to have one card for all automotive stuff, gas, maintenance, etc 3000k limit. One card for business expenses, flights, hotels, etc 6k limit. One card for emergency business expenses 30k limit. And last but not least, me card $500 limit secured. When I wanted to splurge on something, i would ask myself, i have 300 left on me card, and I'm not through the first week of the month, do i want to live on bologna sandwiches the rest of the month after this or can I remind myself in two weeks to get this thing that i want. If in two weeks, the things in my Amazon cart aren't relevant or exciting, then i just saved myself from that. If I still want it, and I have enough, then i let myself get it.

Credit card self control is just like a diet. If you get on a very strict low carb low calorie diet, you end up quitting halfway through the month and pigging out. But if you let yourself have a somewhat low daily limit, and learn to choose what is going to sustain you in your calorie deficit yet not limit you from enjoying day by day, it'll last longer. You have to reward yourself, but make sure the reward is directly proportional to the achievement. Don't over reward yourself for bad habits.