My Anger

Old problems.

My anger is there, if you tempt me you will see,
The darkness that can come from inside of me,
My anger is easy to control,
But when unleashed I have a dark soul,
My anger is as secure as a vault,
But if you put in the right code and I will begin my assault,
My anger was a problem,
With the received help, it is now a solved one,
My anger will not control me,
This is what I can guarantee.