At key points in life, you must choose between that which is most beneficial to you and that which you know to be right. You will have to decide if you follow your conscience, even when there is no reason to assume a positive outcome for yourself.
It only stands to reason, however, that if you ever want to live in the hands of the supernatural, beyond the confines of mortal logic, that at some point you must make a choice just like this. Earthly outcomes follow choices based on earthly evidence. If you ever want a heavenly outcome, at some point you must leap with nothing earthly in view to catch you.
Thus, watch for these moments where there is no evidence that things will work out well, and in those moments take courage in the knowledge that the lack of evidence is the greatest evidence of all.