YEAH! You can do it! I personally choose Weight Watchers, because I love it and it works for me. So find the best way for you to start eating healthier (sounds like you already have a plan). And great on the exercise plans! Zumba is NUTS! And i love it! It's hard work, you feel like a fool, but it's so fun and I laugh a lot, which is also good
I've also started a running/jogging/walking program. Biggest advise I can give in that area though (with exercise) is don't start off doing to much. You need to ease into it or you'll burn yourself out. Your body needs time to rest, most sites suggest doing it 3 times a week for 30 min a day. So just consider not doing every day, ONLY at first! Best of Luck! You can do this!