It's a habit to get into, like budgeting. Your budget can help you free up the money to save. Start saving for retirement. Yes, it's a long way off, but that's in your favor. Time is your biggest ally.
Investments compound in value over time, and the longer the time, the more they compound.
The quality of your retirement will depend more heavily than previous generations on your savings, and you'll likely live longer in retirement than previous generations. Invest at least enough in your retirement plan at work to maximize matching contributions from your employer. Don't cash out retirement plans. Young adults change jobs frequently these days, and they often cash out their retirement plan accounts when they leave a job. Frequently they spend that money frivolously instead of rolling it over into another retirement account or an individual retirement account.