Schedule your weekly exercise sessions in a daily planner or calendar. Consider these as appointments with yourself. Give yourself the same respect you give others in keeping appointments. Your only reason for not exercising should be if you're sick or injured. Enlist a friend or relative to share physical activity with you or to act as a helper.
Support is one of the most important factors in exercise adherence.
It can take up to 8 weeks to see some of the benefits you desire from your program. Use a log sheet to track your progress. Consistency is the key, not how long or how hard you exercise. Do ten minutes when you don't feel like a longer workout. Write it in your log.