Having a supporting wife/family is also a key to trading success. People are naturally looking for security while traders look for the true opposite : risk taking. That's a reason a lot of people including your family can't understand it. I used to have my mother telling me to quit trading every week and I only start now to see a reversal in P/L slope ( after 3 years of trading).
It is important to never give up but it is also important to ensure that you evolve with time and that you have the right tools to self assess yourself.
my 2 cents,