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As long as I can remember.
I remember when I was small a kid I mean, I usually write short stories and long stories but at times whenever I start writing the long stories one most especially, I find it difficult to conclude it.

I stopped writing stories and move to writing motivational write up and that I did for some years also before finally moving to the business and science genre because
(1). I am a lover of science (science student to be precise)
(2). I am a lover of business write up also.

It has really been longed I must say. Perhaps around 12-15 years ago