Starting I

Everybody  has  ups and downs with the exercise habit.

Most people’s experiences consist of starting and stopping and starting again. Don't worry about that, the most important thing is starting again.

Tips

• Start easy. Many people set out with a lot of ambition and enthusiasm: “I’m going to go to the gym for an hour a day!” or “I’m going to run 30 minutes every day!” The problem is that the goal is too difficult to sustain for very long. You can do it for a few days, but you soon run out of energy, and it becomes hard to do it. So start becoming more active in your regular life: use the stairs instead of the elevator, walk or ride your bike instead of use your car...  At first you can start   doing some exercise twice or three times a week. Could be to take a walk (try to go fast) and sometimes try to jog for a while. But remember always will be better to do something than nothing.
• Don't start with too many goals. Often we set out to do too much. We want to run, and lift weights, and eat healthy, and quit sweets, and stop drinking soda (coke...). You should start with small steps and with one big goal at a time.
• Get enough motivation. It’s not a lack of discipline, it’s a lack of motivation. You should find your own motivation. One good way could be to make your goals public. Tell your friends and your family about your goals. 
• Write down which activity, when, at what time, for how many minutes and where are you going to do. Try to measure it. After you do the workout record what you have done: 30' walking-joggin or 3 sets of 10 abds, whatever you do.
• Be patient and persistent. You are starting a long race, a race which should last all your life. And be aware that you won't see the results very soon so as I told you be patient and persistent.

I adapted this text from the blog of Leo Babauta, zen habits