Losing weight.....

I am currently attempting to lose at least 40 pounds. This is difficult for me because I am always dealing with food for the family. I recently gave up Mountain Dew in an effort to increase my weight loss. Now I need to find an exercise regimine that I can do without it taking too much time so that I can fit it into my schedule. I have an exercise machine but when I use it it doesn't feel like it's doing anything. Therefore I don't really use it. I'm one of those 'no pain, no gain' people. If I can't feel it the next day I didn't do enough. So I've tried yoga....no feelings from it. I think I need to go back to doing my buns of steel series but the time it takes is prohibitive. I really don't have an hour to do one tape. Although I will say that when I used that I did see results. So I just don't know what I am going to do yet physically. I have cut back on food and sugary drinks. I drink a ton of water a day now. I'm just trying to find the right things to take in the rest of it.