Thanks everyone.
Both sides, both against and and for, I feel are correct.
It is a large risk, possibly suicidal to undertake training. On the other hand no matter how slim my chances are if I go ahead, there is still a slim chance nevertheless.
Of course no logical action-planned mind would go ahead as it would seem as though they would not succeed. Most people I would imagine would have this way of thinking.
However the high risk, the more than likely event of my failure, there may be that slightest chance.
Thank you for your input everybody. I will have to sit down and seriously consider what path I will choose. My 'go grab it' attitude may well be my success, or my downfall.