Fear

Fear represents insecurity in what is going on, and life is always insecure in the way that you never know what is going to happen exactly because life is life and it's not a set page, its constantly changing. Making it inconsistent and insecure. Since life is insecure, we should all be in a state of panic. Except for our ability to foresee, plan and adapt. We can foresee some of the many paths in life, and create scenarios that give us some percentage of knowledge of what might happen. Then, we plan. We take those scenarios, and we decide this is how you are going to react to all that happening, we plan a defense, so we feel stronger and prepared. And finally, when all this fails to give us a heads up on life, we adapt. We take what is thrown at us and bend around it in order to survive. 

Keeping in mind we have the power of those three abilities, we can reduce our fear by 20-60%, depending on who you are. Yet fear is always going to be there unless you know everything, which you simply can't - sorry.