Trying to find the Motivation

With the lack of exercise looking like it is the cause of the lack of weight loss, it's time to try and motivate myself. I did a little bit of googling to see what tips and tricks were out there. Some of the them just aren't going to work for me. Sure I could try and ride my push-bike to work sometimes, but first I'd have to fix it and see if I could actually make the distance without killing myself. Sure I could sign up to a gym but they are pretty expensive and I think I would just end up wasting money. I don't have any special work out clothes to leave out to remind me and my wife would probably just put them away for me anyway.
One idea was to reward myself, this is something that I could probably do. I'm not sure what the reward should be and how or when the reward should be given. Is it every 1kg I lose, or if I don't lose 1kg in a week. My goal of being 90kg by Christmas is basically gone, I don't think that there is anyway I could possibly achieve that goal now, I think it may have been a little ambitious in the first place but it seemed so easy losing weight at the start.
I'm not sure what else I can do to motivate myself, it was easier when I was walking everyday to keep on walking each day. Maybe I shouldn't have the weekends as rest. Maybe I need to be pushing myself each day and not being lazy. Maybe it doesn't have to be walking each day, maybe I can fix my bike and take the kids for a ride around the lake or something, especially now that the weather is warmer. I don't want it to be the middle of summer and then I'm making excuses that it is too hot to be outside.
I just have to start doing these things if I want them to happen, it's like waiting to win the lottery and blaming the lack of funds in the bank on not winning the lottery yet. It's like complaining that I'm overweight but not doing anything about it and just wanting the weight to go away all by itself. I need to fire up, but I don't think I have the energy to fire up, I just need to start, I need to start trying harder. I need to make the changes needed to improve my health and stop making excuses. I don't have to walk if it is raining, I can always do star jumps and sit ups at home. I need to find the switch in my head and flick it to get myself going like I've never gone before.

Bomber
should I blame myself?