So, in starting (and continuing) the 21 Day Fix, one thing I have learned is that it's all about the prep. If you are prepared, the program itself is very user friendly and easy to do.
But the prep.
So what I have started doing is setting aside Sundays to really set myself up for the week. The weeks are CRAZY for me, between work and tutoring and anything else I have going on. Most days I leave my apartment at about 7 and don't get home until about 6. So having things ready to go is key for me.
Another thing I do in utilize my crockpot and rice cooker. Often on Sundays I'll make a meal in the crockpot that can work as lunches during the week, and steam either brown rice or quinoa in my rice cooker so I have it prepared to simply throw in a "yellow" container to measure.
These simple tips have really helped me follow this program!