When I was 17 and fresh out of high school, I quit my part-time job in the men's clothing department at Sears and took a full-time 3rd shift computer operator job in downtown Denver that was "no experience necessary". It was at a credit bureau, and they gave all the applicants a spelling test. After I was hired, my boss told me that I got the job because I was the only one who spelled "bureau" correctly, and I was the only one who wore a suit (from Sears) to the interview!
Anyway, I had one week of overlap with the outgoing operator. The job wasn't too hard and after picking up the basics, we had some free time to shoot the breeze his last few nights. He was going to college for accounting, and he started talking retirement planning. He must have been 20 and I was 17, still living at home and mostly concerned about making money to chase girls and put gas in my tank. But he managed to get the concept and benefits of investing in an IRA, getting the initial tax breaks and tax-deferred growth to sink into my skull. So when I turned 18 that summer, I opened my first IRA and started saving. I give that guy, whose name I forgot decades ago, a whole lot of credit for drilling that lesson into me. It is something I likely would have ignored if it had been coming from my father.
Over the years, I went to school and changed jobs a lot, but always funded either that IRA or anther IRA that I opened along the way, and later company 401K plans that allowed you to save a lot more, especially with company match, if offered. It all grew to a substantial amount.
One thing I didn't learn until it felt too late, was the benefit of a Roth plan. I went to a retirement planning seminar a few years before I retired and that lesson finally got hammered home when the instructor said, "Would you rather pay taxes on the seed (making a small circle with his fingers) or the harvest (with both arms outstretched)?". So taxes on withdrawals cause me a lot of angst that would be avoided with a Roth. But my wife was smart enough to set up her 457B savings plan as 50% Roth.
We both have traditional pensions and social security, plus a couple other income sources. We are very lucky that way, and jobs with pensions are no longer easy to find. My advice would be to start saving as early as possible and don't ignore the benefits of a Roth like I did! If you started saving for retirement at when you were young, then congratulations! But if not, you can still get it done. Hopefully you are already saving, but if not, start now!
Save until it hurts, and if your employer offers a matching aspect to your savings plan, figure out how to live on less money to the extent that you at least maximize the match, since that is free money that you can't afford to ignore. My company 401K matched 60% of your contribution up to 6% of your salary, so even when I was paying alimony in the Dark Days, I at least contributed 6%, so it actually meant saving 9.6% with the match. Then they had a feature that allowed you to program in automatic increases and so I set mine up to increase my contribution by 1% per year around the time when the annual raises came out, so I'd save more without noticing since I was still taking home a little more after a raise. I had to turn off that automatic bump part after a number of years when I got close to the IRS maximum allowable contribution. The other part of that is that when you get used to living on less money due to saving so much, you have that much less to make up for in retirement income to maintain the same standard of living. My wife and I make 85-90% of what we made while working, but because we were saving 15-20% of our income while working, it actually seems like we make a little more.