over the years i've seen quite a few guys and even a couple of women come into the service end of this business.
Most of them do not stay very long because they just dont seem to grasp and hold on to the concept of this business. It almost seems as if they see the potential for the pay they can get but after they get into it something happens and they seem to give up and either just leave and go on to other jobs that pay more or get fired for not performing up to standards that the management sets.
One thing that i personally noticed is they did not seem to have the customers interests put in the forefront of their activities, they appeared to be more concerned with how much money they could make instead of putting the customers interests first. (Just an observation)

Young people these days are caught up in the 'money' wanting to make it all up front, get the 'big money' without working for it it seems. Once they find out they actually have to put forth an effort or get thier hands dirty they run away.
Over the years i can count just a small handful of individuals that have stuck it out and done very well , hung in there and are now the top tech's in the field in this area.
This is a tough business and i can say that if your heart and mind are not into it you will not survive.