Starting a Habit

Still having trouble starting an exercise routine? Here's an idea...
-Set an easy goal... something doable... like walking for 5 minutes everyday, working out for 5 minutes or bicycling for 5 minutes.
-Write your goal down on paper and post it where you and others will see it... this will make it more real and harder to dismiss.
-Start a journal... log in everyday what you did for exercise and for how long... you can also add how you felt, your mood, etc.
Be specific... What you will do, at what time, and for how long... make it an appointment with yourself and make it a priority.
-Then do it... you can do 5 minutes, it's not hard to find that kind of time, you've been stuck in traffic for more than 5 minutes and the rest of your life survived.
The aim here is to just start a habit, once you get into a habit it'll become easier... like brushing your teeth, you wouldn't leave the house without brushing your teeth, would you? You don't really have to, but you don't want rotten teeth or bad breath, so you do it. It's a habit, a habit with some motivation behind it.
So just do the 5 minutes of exercise a day for 2 weeks, then increase the time to 10 minutes a day... you can find another 5 minutes just as easily as you did the first 5... now you're doing 10 minutes of exercises a day.
Don't forget to change your goal and post it and keep logging your progress. It is progress now, because you've increased the time.
After the first month, you can decide whether you want to increase it another 5 minutes or just another minute every week or every day... until you get to 30 minutes. By then you should be seeing some progress, if not by weight loss then at least by feeling a whole lot better.