When you go to your doctor, he will tell you if you need to start watching what you eat
. Your doctor will be able to tell by how much you weigh. Then he may put you on a diet to drop off some unneeded weight or a diet to help you put on some mass. He will explain to you what to eat and how much as well as what not to eat. Then he may tell you to excise everyday. You have to be able to burn up what you take in so it will not turn into sugar or fat.
Also, you should try to eat from the four food groups. Try to make sure that you only digest the amount you're supposed to, and get the workout you need to start leading a healthier life. You can always phone your family doctor to question him how to do something if you don't know how they will also help you to understand how to keep track of your calories. This is important because it is a big job when it comes to getting healthy, you have to know how to count your calories and keep track of the food that you take in. If you don't you are not going to get the results that you want.
There are several support groups that will help you if you need support. More then likely you can go to your local hospital and they will know how to get you in touch with a group. These groups have really helped several people reach their goals. The groups will give you encouragement during the time that you need it the most. At group meetings, you will meet people with the similar problems you have and you can give each other the help. Just remember to set a goal but don't make it so ambitious that you can't do it and become discouraged. Begin with a few steps at a time and then as you get better you can set higher goals. Additionally, whatever you do stick to it, it takes will power and control.
Lack of willpower will not ruin you:
Something with much more power than willpower is rituals. By forming rituals you are no longer relying on willpower to achieve things in your life. Instead make it so that at a certain time you are exercising. At a exact time you are eating healthy foods. At a specific time you are working or having fun. The idea is to make it so that you pretty much know what you are doing throughout the day thus you are not hoping on willpower because we all have a limited amount of willpower. So, if you want to make it then rituals will get you there.