Think about it...with any goal you have in life you have to start somewhere...when you want a new job you have to take the first step of imagining what you would like to do. Then you have to do a job search. Then apply for jobs, etc. Other changes such as lifestyle and diet changes work the same way. First you have to imagine where you would like to be, then take that first step.
For some people the first step might be talking with someone that has knowledge that can help them. Health Coaches are great for this. After you talk with someone you being to contemplate what change you would like to start with. Can you add 10 minutes of walking to your day? Can you change something in your diet?
While I love exercise I know how powerful dietary change can be in helping people lose weight and reduce risk factors for obesity and related diseases. So my advice is to think about what one thing you can change in your daily diet. Can you replace your morning eggs and bacon with oatmeal and fresh berries? Can you replace the afternoon candy bar with a couple pieces of fruit? Can you have a large salad with salmon instead of the cheeseburger for lunch? Water instead of soda? The key is that it should be something you routinely consume so that each day you are making this substitution. If you don't already eat oatmeal in the morning I would like to recommend that as a great starting point and here's why: oatmeal is SO good for you and keeps you full for hours. If you don't think you like it then try it with fresh berries and some brown sugar. Listen: oatmeal is so good for you, even with a sprinkle of brown sugar it beats out most, if not all breakfast options.
But the key is to take that first step. Find that one thing in your life that you can add to it to begin you on your way to a happier and healthier life. Change happens when you take that first step! What can you add in or change in your life today to take that first step?