You see, if you say you're in control, you are taking responsibility for your life. This scares a whole lot of people. They didn't take responsibility. You need to grab the wheel and decide where you are going. Now, it's time to work on that attitude.
Tenacious people are optimists.
It's realizing things don't always work in your favor, so you prepare for those times. But, you don't sit around wasting time and energy expecting those bad things to happen. And, even though some rain must fall in all our lives, an optimist knows that when it all balances out, he comes up a winner most of the time. Along the same lines, a tenacious person doesn't wallow around in the mud of self-pity. Understand what went wrong and what you should have done.