I'm in my mid forties. My doc told me a couple of years ago that I was just a little overweight but that I was going to have problems in ten years if I didn't lose some.
I lost 30 pounds in 2011 by just eating less but found it extremely difficult to not "cheat." I finally hit a plateau 10 pounds short of my goal and in the first half of 2012 I put 5 pounds back on. It was a real struggle; I felt I was constantly depriving myself.
Last September I started alternate day fasting, not so much to lose weight but for the potential longterm health benefits. Compared to constantly watching how much I eat, this is relatively easy since I feel like I'm only depriving myself for a single day and I feel rewarded every other day. On my fasting days I eat just 600 calories which requires planning, but on my eating days I can pretty much eat what I want without guilt or lasting negative consequences (I find I can't pig out like I used to anyway).
I lost the 5 pounds I gained at the start of 2012, hit the plateau again for a couple of weeks, then lost another 5 pounds. I was still 5 pounds short of my goal but I was happy at that weight. My doc was too. I crave healthier foods now on my eating days and my sense of smell is stronger, to the point that a lot of junk food I used to like now smells and tastes terrible and I have no desire to eat it.
On top of that, I discovered it was easy to get back onto my schedule after vacations and holidays, so I let myself go over Christmas when I was constantly around family and food, put on 8 pounds, got back on my schedule after New Year's and have since lost 4 pounds. I really feel I'm now in control of my weight.
For exercise, I started walking home from the train station after work a few years ago. 20 minutes of walking every weekday isn't enough, of course, so I started walking to the station in the morning as well (every work day, even through the long Canadian winter). I also set a daily reminder in Outlook to get up and move and -- whenever it pops up -- I jog up and down four floors in my office building, then snooze the reminder for an hour. I can't always get up when it goes off, but it sits there on the screen until I can take a break. Again, it's not a lot of exercise but it's more than I did before, and I discovered after injuring my foot and taking a break from my little jogs that even with the fasting I need that little bit of exercise to maintain my metabolism and lose weight.
Finally, I needed to do something for activity in the evenings and on weekends, so I set up hourly reminders on my Ubuntu workstation at home (alarm-clock.pseudoberries.com), the idea being if I'm not at my workstation I'm already moving around (or, if I'm watching TV with the family, I get up at the end of each show). I haven't found the perfect exercise plan yet, but currently what works for me is lifting weights (three to eight reps, only one set, arms one week, chest and back the other week) on eating days, then 20 situps and morning glories (with weights) on non-eating days. It's about five minutes out of every hour... not likely the best plan for serious bodybuilding, but I am looking better and feeling great, I'm moving, my blood pressure dropped to a healthy level, and most of all I find it fairl