The most fundamental ingredient to success is having clear vision. A crystal clear vision. Without this clear and precise vision, you are going nowhere. You could be the most capable, motivated, intelligent person in the world, but without a clear vision of what you want in life, you are never going to get to that point.
Think of it like this: the most experienced pilot with the best plane is not going to get to Mozambique without a map, he might make it to that area there eventually by flying around the world for a few days, but without the location or end point, he will not make it to the precise place he wants to be.
Whereas take the pilot who has the map, he knows where he is going, he knows that he is going to have to fly down along the east coast of Africa and therefore he will get to his location quickly and easily.
Once you know exactly what you want out of life, you can then map out a path from Point A (where you are) to Point B (where you want to be).
For example: I want to have a great body like the below.
This is my vision. It is clear. And having a clear vision allows me to make a plan in order to get from point A (my current body shape) to point B (my vision). I know to get this body, I have to go to the gym, I have to eat healthily, I have to make sure I get enough sleep etc. These are my action steps in order to achieve the vision I have.
The take-away of this post is that without a crystal clear vision, you will never get where you want to be. As the above quote says: Decide what you want (your vision). Write it down. Make a plan. And work on it every single day.