For years, I've joked around with my coworkers discussing retirement saying "first, you need to know when you're going to die so you can plan backwards from that." But joking aside...
For many years, I've wrestled with how much you should save vs. how much should you spend to enjoy life now. If you penny pinch everything, you may miss all the fun you could have in life. But if you spend too much, you may never be able to afford to retire. And as my years roll on, it is a little sobering to see some friends, coworkers, family, etc, pass away earlier than expected. I don't know if I'm going to live to 100+ or die of a heart attack tomorrow.
My current plan is to retire in about 6 months. I almost pulled the trigger a year ago. I'm definitely stepping back from full time work. I've talked with my bosses about maybe switching to part time work; we'll see what happens.
For those of you who are retired, how do you keep your brain mentally sharp? I've heard it is easy to let it become a vegetable once you stop working. After 30+ years in my industry, I need take a break from some of the intensity, but don't want to completely veg out.