No, I am not good with money - I can't keep track of it and that is why I have all my direct debits as set amounts, and the money going into a separate account which I know I can't touch. However once I have spent my "spare" money I don't go looking for more. My sister never really spends money and has probably twice as much in her savings account as I do. (We are both quite young - she still lives at home)
I tend to avoid things like credit cards, loans and overdrafts as I know I would spend it all little by little and end up in huge debt. But as Martin Lewis says, not all debt is bad, bad debt is bad. So if you have debt, you should know what it was spent on, e.g. a car, conservatory, wedding. If you have debts just because you live outside of your means then that is a spiral you will never get out of.
My ex was awful with money and used to feel panicky if he had less than about £100 available in his bank - so for example he'd be much happier with a balance of -£374 as long as he had an overdraft of £500, than having a balance of +£27 and not having an overdraft. (I am the opposite and it drove me mad) When he was low on money he would just keep "upping" the overdraft until it was over £1,000, then he would buy something huge like a car and add the overdraft onto the loan for that, by the time I left him he was about £10,000 in debt, in his twenties.
I think the difference is, I learned early on that if I spent all my money I wouldn't get any more and I did go without things and learnt that I wouldn't die from it - whereas my ex never got pocket money and always asked for things and was told "yes" or "no" - usually yes. I don't think he really knew the monetary value of things.