Probably not. I should be able to retire at 50 or 55... But I spent my 20's putting 15-18% of my pay check in my 401k, and I've never dropped below 7% contribution. 43, just started making 100k a year and I should be a millionaire next year, should have about 2 million by 50, 3-4 million by 55, and that's not including the family trust fund(which most people won't have)
Contribute as much as you can to your 401k when you are going and you'll be doing it right.