Welcome to Social Slimmers!
Exercising you NEED rest days, if it starts to be come a chore then you need to slow down. Yes some days I need to kick myself up the backside and some days I have to push to the end but I feel great. 7 days a week is crazy... I do 5 days boot camp which lasts about 40 minutes and 2 running days (treadmill or outside) however they are on a boot camp day giving myself 2 rrest days min a week but if I need to have a extra rest day I will.
How many syns are you using? They say to use at least 5 (if I remember right it is 5). Don't punish yourself and occasionally use moderation or you will go backwards and lose the want to go on ... you are making changes to teh way you eat, I am still changing things and how I eat 2 years later.
I hope you manage to work out what's best for you but when you do you CAN do it. Be positive tell yourself you can!