Hey, well done on making it a whole week. That's awesome!
Relapse is par for the course in recovery. All you need to do with it is think about what lead you to that point and how you might look after yourself next time.
Maybe anger was building up (as example) so what non-harming ways could you release that anger? I've punched pillows, thrown teddies, smashed plates (in controlled area), screamed into a pillow, stamped my foot.
You know, we're not built to be still with our emotions. I find the ways that express anger more physically -even if it's exercise, they have a bigger calming and positive effect than those that keep me restricted and still.