Hi there!
But I know what you mean. I'm one of those people who is NOT an exercisey person. Never will I run in a marathon of any sort, and that's just fine. But I do know that exercise is key to weight loss (dang it), so I do it.
I'm one who talks myself out of stuff if I can, and I'm working on quitting that. One thing that helped me as it got colder was to go and exercise at a gym. I was freaked out at first (as I wasn't in good shape at all), but it went fine. You probably won't feel motivated at first, but just keep doing it. After you get more used to it, you might like it better. And trust me, it helps take off the weight. Pick an exercise you like (or at least don't dislike) - that tends to help. After a while you'll get into the habit and it's a little easier.
Just this morning I found out how dedicated I am to exercise. Lol! I woke up and it was POURING rain, and it was so windy the rain was going sideways sometimes! But I didn't let myself think about it - I grabbed my rain parka, my gym stuff, and headed out. It's a 10 min walk minimum to the gym (don't own a car). I get up at 5 in the morning to work out because of my school/job schedule, so no one's up to give me a ride.
So I get to the gym soaking wet from the hips down (my jeans literally dripped). The electricity went out 3 times or more at the gym, too. But I'm glad I went - I won't do that again probably, but it let me know what I'm willing to go through. And I actually did an extra long workout just to make the most of my suffering. Hahaha!
The roundabout point is that if you pick something you like and can stick with, it's way more likely you'll stick with it. Try different things and different times of day until you find out what works for you.
Good luck!