Make a budget. Spend less than you earn (or earn more than you spend.) Create a debt repayment plan and incorporate that into your budget. Once your debt is paid off, stay debt-free, keep budgeting, and roll your debt payments into a saving payment plan. Increase your earnings when possible and save the excess. Re-budget if needed but always try to minimize your spending. If you can, split expenses with someone, but only someone absolutely trustworthy (or as close as you can get) since splitting up with someone you share expenses with may cost you more in the long run.

With regards to saving, first set aside an emergency fund, which should be roughly 6 months of necessary expenses. This will protect you from falling back into debt should emergencies arise. Once you have an EF set aside, time to learn about TFSA and RRSP and the best ways to protect your future investment income. In my opinion, maximize your TFSA first and then pay into your RRSP. Learn to invest, compound interest is your friend. Don't gamble with your entire savings, but some stock plays will out-earn safe investments, so figure out your risk tolerance.

Altogether, it's simple but not easy. Sticking to a budget is hard, but that's the key feature of financial stability unless you will always out-earn what you can spend, which isn't true for 99% of people.