We are what we repeatedly do. Excellence, therefore, is not an act but a habit. -- Aristotle
Slow and steady wins the race. -- Aesop
Ask any well-versed personal trainer or avid fitness enthusiast what it takes to get in shape and you'll more than likely get a list that includes something like this:
Set specific goals
Do cardio (High Intensity Interval Training preferred for fat loss)
Follow a good nutrition protocol
Get adequate rest and recovery
These requirements, of course, do provide the foundation for obtaining that healthy, fit body you're searching for. . . but there's something even more important.
You've got to get to the gym on a regular basis. (Preferably more than "regularly, once a month.")
When training, you've got to be consistently focused and actively involved in the process.
You've got to consistently eat 5-6 balanced meals per day, consistently minimize the amount of processed foods you consume, consistently drink half your bodyweight in water.
You must consistently give yourself good nights of sleep.
Most important, you've got to strive for consistent manifestation of positive energy and positive mental attitude. Being positive will provide you with the environment to consistently develop new, good habits, as opposed to falling back into your old, undesirable ways.
Essentially, you've got to be that person that consistently " makes things happen." When it comes to getting in shape, "the list" is important; but adhering to that list consistently will be the difference between realizing your goals or merely treading water indefinitely.