Retired at 59 with modest income, but the key was zero debt, to include no credit card balances carried forward and no house payment. Unfortunately, from first hand experience in the retirement community I live in "we" are in the minority. Many people service debt to the grave. Of course our government doesn't get it either.
I wish you well and sure you will do fine if you have all your debt retired long before you do.
I'm 59 with no debt as well. House has been paid off for years, paid cash for the kids college educations and weddings by working overtime.
I had not even considered retirement until I blew my back out at work 5 months ago. I have grandkids that are accustomed to getting dirt bikes and .22's from Grandpa and Grandma. :-}
But if the surgery I had a couple of weeks ago isn't as successful as I hope they'll have to get used to skate boards and nerf guns. Such is life.