“Strength doesn’t come from physical capacity. It comes from an indomitable will. ~ Mahatma Gandhi.
Nutrition is going to play a key factor in determining your success. Therefore, you will need to have the willpower to help you overcome cravings and temptations for bad food. Good nutrition is the foundation of all other goals, including fitness goals. You will see a difference in your energy level, mood and clarity once you begin to replace processed foods with good nutrition. You will notice the fatigue and mental fog beginning to vanish. Once you experience that sense of clarity, you won't want to turn back. You will start to develop the natural energy that is needed for exercise and everyday tasks.
Have you ever wondered why energy drinks have become a multi-billion dollar industry? It is the bandage that covers the symptoms that the standard American diet has created within our bodies. We are putting these toxins into our body in efforts of counteracting the effects of other toxins. This only contributes to the issue. Energy drinks provide a boost of energy for a few short hours only to end in a crash. What's even worse is that once you've begun drinking these products on a regular basis your body builds a tolerance and loses the effect. You then have to continue drinking these products because your body has stopped producing natural energy. Which means you will have to consume more and more as it becomes an endless cycle. Rather than masking the symptoms, the best thing to do is to begin treating the source.
Before beginning any new diet, talk with your doctor to make sure there are no dietary restrictions. Address any concerns you have and express your desire to lose weight. Seek his/her advice and then do some research. The wonderful thing about modern technology is that it grants us instant access to information. There are documentaries you can stream on Netflix such as "Hungry for Change" which I found to be very resourceful. There are podcast stations, YouTube channels, blogs, articles, and other endless amounts of information regarding health and nutrition. Do some research and decide on a path that works best for you.
If you are not sure as to where to start, just start by eliminating processed foods and consume more natural foods like fresh produce, seeds, nuts, and lean protein. Seek information from credible sources and try to avoid fads and gimmicks. There is no such thing as a “get fit quick” solution. Most likely it took some time to get where you are now, and it's going to take some time to get the results you are seeking.