Keep in SFI depends on your desire to succeed, how much you are persistent in achieving your goals, on how seriously you realize every job that you do and thus the work of SFI.
In other words, if you're serious worker in any job, you'd be good at this. Those who give up immediately, did not appear SFI to work but to get rid of what looks like insistence in "recruitment" by those who blindly believe that anyone who joins becomes a good worker.
