Huge tip, right there.
All you whipper-snappers, make sure your 401(k) or IRA plans receive the maximum allowable contributions, and don't neglect the all important Mattress Fund.
YES, YES, YES!!!! I'll take this a bit further. You need to save 10% minimum from your paycheck EVERY PAYCHECK. 20% is better. Get in the habit. If your job will do direct deposit type payroll deductions, do that so that you are not tempted to miss a week. Put it into a balanced investment portfolio like a 401K or a Roth IRA and NEVER TOUCH IT!! You will be wealthy and financially very comfortable when it comes time to retire. When I was working I saved as much as possible. No kids so that put me in a better position that those with children. So, I took advantage of it and socked away every cent I could. When you have it deducted from your weekly pay, you never miss it because you never get to have it while working. You get a raise, that percentage just got raise as well.
There is a book called "The Wealthy Barber". I suggest this book to anyone who is just starting out in world as a young adult. A good friend of mine was the acting CFO for NYTEL back in the day and he gave a copy of this book to all his kids at their 18th birthday. He gave me a copy and I embraced it whole heartedly. My problem, is I was pretty ignorant about finances and saving until I hit my 40's. I came from a generation where pretty much everyone we knew got a pension and I took was working for a company with a good pension plan. Pensions can disappear in a flash. Just ask anyone who worked in the steel industry in PA.
And even if you have a 401K, if you can, set some more money aside from your take-home pay. Get a GOOD financial consultant. Start your own investment portfolio with him and have him teach you about finances. Don't use any free services provided by banks. Those guys are really just salesmen working on commission to sell you investment products. Those who don't have a 401K plan at work or are self-employed need to start a plan NOW.
I've been retired since 2013. I can tell you with confidence, that financial security in retirement is king. As you age you will meet many new challenges. Not having to worry about money is a big help as you cope with the rest of what life throws at you.