There is no success without knowing a definite goal and reason for accomplishing it, your purpose. Accept the challenge by answering these questions for yourself:
Why are you doing this?
When do you know that it is accomplished?
How are you going to do it?
When you know why the purpose for your success is layed as a foundation and the stronger the foundation the greater the success. The passion for success builds the discipline on top of the foundation to create the Better You. Your purpose will overcome the normal stops and fits, which are the breaking of old habits. Constant reminders of the purpose fuels the passion that burns stronger to succeed.
Like any journey there must be a destination and that is different for everyone. Find your finish line to know when you feel that you are healthy. Is it when you have dropped X pounds? Can see definition and tone? Have the energy to tackle the day without a nap? Have glorious abs, arms, chest, and/or legs? Write it down and set up your consistent and disciplined focus.
Have the map in hand. The basics are to stop taking in junk, start taking in vitamins and minerals to provide the best materials to build the Better You, and determine a fitness plan that you can be done consistently. From there it is only a matter of time and passion, which will raise the intensity to accelerate the accomplishment.
Nutrition + Fitness = Health