i'm 48 and my average weight loss rate is 1.33 pounds per week. There are a lot of chicks with a much more impressive record, but my method works for me and I'm still able to have a couple of junky meals per week (a small bit of pizza and tater tots from Taco Time). It doesn't work for everyone, but it works for me.
I've been at this since the beginning of January. I've "only" lost 45 pounds, which isn't going to break any records but I cannot tell you how much of a difference it makes. You absolutely can do this and the time will fly by whether or not you're losing; might as well lose!
You can do this and we are here to help you!