Welcome to SparkPeople. You have child that looks up to you. Besides that just think how much motivation you will be to those around you as you work on getting healthier. Just remember this is a life style change. You will find the people here are very good with lots of ideas and support when you need it the most. I am glad to meet you. 1340 days ago
You've picked a couple of hard ones to do at the same time, but they aren't insurmountable. Just make sure you have the right support system in place for each - especially your physician.
I quit smoking back in 2000 with the help of the patch, after two shorter-term periods of up to a year stopped. Unfortunately, I poured on weight, so it will be good if you can control that at the same time! Make sure you get the help you need on both counts. There are more systems available for quitting smoking and for weight loss now, so hopefully it will be a little easier. Being a single Mom will certainly help keep you busy! lol There is at least one good reason for both efforts, right there. While it's hard work, don't let it get you down. In fact, there are groups on the site for that!
SparkPeople is a great start! Take a look through the site and search the articles - it is vast and almost overwhelming in the amount of support and information available. Make some friends, as they will be a top-drawer support system, too.