The best I can tell you is you have to make up your mind and just do it!
You know losing weight is a process; and depending on the amount you want to lose, it could be a lengthy process. Having clear short-term and long-term goals will make that process more exciting. Once you define what you want to achieve and when, write those goals in a notebook or on the computer. At the beginning, especially if you've been away from a regular exercise program for awhile, you should set weekly goals and one ultimate goal. Use your notebook or an online fitness tracker to record your workouts as well. Record your daily exercise; the type and duration. Take your measurements and weigh yourself before you begin; and note those figures down as well. Do this at the end of every week and within about two to four weeks you’ll start to see changes in those numbers. You’ll be losing weight or inches and it will start showing in the numbers.
Write a Schedule, Make this about your health, Make It Fun, listen while working out download podcasts. How about working out with a friend.
You can do anything you put your mind to...it's just a matter of how bad you want it. Don't make excuses, everyone can find time to workout. What I do if I don't really want to go workout is ask myself, how will I feel in 2 months if my health has gone downhill because of my laziness? Best of luck to you.
Get people to do it with you, I rarely want to work out alone, but if I am with a group of people and we meet at a certain time, I feel less forced to work out because I am meeting with friends. Try it out. I guarantee you will see a motivation improvement.
Find an exercise buddy or a gym buddy. Find someone you know who has the same goal. Keep each other motivated. Set goals together, plan, stick to the plan and work hard on achieving both your goals.