Can I loose 10 pounds by doing this?

Ugh, I'm so stupid. For the past two weeks or so I've eaten HORRIBLY! The outcome? I used to be 90 pounds, now I'm 100 pounds. I need to get back to 90. I used to eat really healthily, so I'm going to back to doing that. I'm also going to drink more water and green tea. I will do yoga in the morning, and go for a jog sometime during the day. What else should I do?