Self control and exercising is a key factor in your journey. You have to watch what you eat as well as exercise that food off to burn those calories and start losing weight. When you shop for groceries check the labels so you know what you are putting into your system. Be sure to look at the calorie count. It's touch especially if you do not have a partner or a person to give you some extra support but it can be done.
Support groups such as forums or message boards are filled with many people just like you so no worries of being alone. You will make new friends with the same type of goals that you have. Also these groups encourage everyone to share their own tips and experiences. Some even have a section to where you can partner up with someone so you both help each other stay focused and complete your goals.
Changing your lifestyle is another way to help accomplish your goals and to keep the desired weight. Not just like with the common diets that are temporary. You will end up losing the weight and then a few months to a year or so later your right back where you started at. Remember the goal is to lose weight and stay fit not lose it.
I know that many of you might feel uncomfortable about this one. Take before and after pictures of yourself. The before picture will be your motivation to lose the weight you want. As well as keep you focused and possibly even work harder to reach your goal.
Pick some kind of exercise you do not mind doing. If you like to run then run. If you like to go out for walks then do so. Whatever you like that can keep you active and burning calories by all means do it. Be sure to make a weekly schedule for yourself to keep track of things.