Concentrate on 3 things first: Attitude, Nutrition and Exercise.
You need to WANT to do this, and you need a very strong reason why so that when your motivation falters, you can remind yourself. Cut out and make a collage of pictures that represent what you will look like, activities you will be doing etc.
Next, eat OFTEN. Eat proteins OFTEN. Eat at least 5 - 6 times per day. You will find protein not only in fish, chicken and meat (stay away from fatty meats), but also in soy, beans, vegies. Eat vegies and meat together. Cut out (avoid) starches like bread, rice, potatoes etc. you will get your complex carbs in your vegies like tomatoes, peppers etc. By eating proteins often you will stimulate your metabolism to start working, and therefore create a "furnace" in your body. Feed the furnace, the more you burn, the more you will burn. Breakfast, Snack, Lunch, Snack, early Supper.... don't go to sleep within 2,5 hours of eating.
Exercise: Start walking 3 times a week for 45minutes minimum. It's social, get friends to walk with you. If you can't, take a few flights of stairs and use them as your gym. Exercise and
stretch in the shower. Be kind to your joints, when you carry weight, it can damage your joints (in the long term) to do anything that is harmful and high impact like jogging. Only start jogging once you've lost the first 5 - 8 kig's.
Your aim for healthy weightloss (and keeping it off) is (1) creating a Lifestyle... it took you 9 years to get where you are now, why would your body want to lose it fast? The measurement is 1kg per week for healthy loss. Don't hurry it, stick to the metabolism-furnace advice and cut out junk food & sugar & starch, and stop drinking fizzy cooldrinks / soda's, drink your 8 plus glasses of still water per day & you will be breat. Wee often, because it is the only way to pass the fat out of your body. You will detox the first 3 days... and possibly have a headache.... so take something for it to get you through and keep that goal-post in front of you. The smoking you should "ween" yourself off slowly too, so that you're not feeling "deprived" of too many things at once. Think thin, and you will become thin (meaning healthy for your height and body shape.)
Go for it!
Lisa