There are no reasons for us to be doing what we do, we ought to fail at one thing or the other. What really matters is how do we respond to failure and success both.
We might have control over some parameters of circumstances and our sincere efforts in trying to succeed yet there ought to be many parameters beyond our control. These parameters could include the external factors that affect the outcome of our efforts, this could include factors like overall government policies, people who you’re dealing with might not fulfil their obligations and duties intentionally or unintentionally, timing within which something that’s important to be delivered under the scheme of things in order to be successful.
So what really matters is how well do you control the things that are in your direct or indirect influence. Remainig is called as the luck, the fate and many other names which are beyond logic.