When possible, wear athletic clothes instead of tight garments. People are more likely to move around and engage in a higher level of activity when it is easier to move. It is ideal if your workplace is casual, or has casual days you can utilize.
A good tip for those who are beginning a weight loss program is to take one step at a time. Drop one bad, unhealthy habit a day so as not to overwhelm yourself. Attempting to rid yourself of every bad habit at the same time can boomerang and stall