There’s lots of books out there on how to manage your finaces better - The Wealthy Barber is a good one to start with. It’s not a dry boring textbook - it’s told as a narrative story.
Some of the main pointers I’ve heard are set aside savings first, before anything else in the month. They recommend about 10% of your money go directly into investments, RRSPs, or just a savings account that you do not touch. it sounds scary, but they claim that you find ways to live without the money. Apparently you never miss it.
They also say to set aside the money to pay your bills ahead of time as well. That way you can see exactly how much you can spend on other things without missing other payments. They also say to save up for big purchases, as in have the money before you go to buy it. (not houses though obviously!)
DO NOT CARRY CREDIT CARD DEBT!!!!! Pay it off every month, in full. The interest rates are ridiculous, and you get nowhere making the minimum payments. If you are not responsible with a credit card, cut them all up and stop using them.
That’s all I know. Hope it helps. Good luck.