Does the number on the scale matter?

I'm really starting to get discouraged with my weight loss or as it happens, the lack of weight loss. I have been losing and gaining the same pound for the last 3 weeks. I'm not sure what is going on. I think what I need to do is focus a little more on my eating plan. I thought that I have been eating well and have been watching my portions. I do have at least one meal a week that is not too good but I would think that wouldn't affect my weight like this. Maybe it is. When I make something at home I always swap out the full fat/high calorie items for lower fat/calorie items and I have been doing some sort of exercise every day. I'm not sure what it is but I will fix it! I will check out some websites for some foods that boost weight loss or some new menu ideas.  I have read numerous articles about not fixating on the number but how I feel and how my clothes feel. I do feel great and my clothes are fitting better. It is just really hard when that number is not moving. It is something I can see that the work I am doing is making progress. I also think I need a little more patience. I keep saying this but it's true- it didn't get put on in a hurry and it won't come off in a hurry. Does anyone have any ideas for me???