Rhyme or Reason

What do you do when, you are asked to explain why you have done/ are doing/ or do something. Where do you position your raison d'etre?
The reason this question is of importance, is that a lot of time and energy and direction is often given minimal importance while justifying issues dear to us.
The precept or guidepost to be remembered here is that,
"While excuses tend to turn focus on the past, reason/s maintain focus on the present and future."
Picking up the gauntlet of giving excuses, is almost like being a willing participant to criticizing and belying one's own position de forte.