Mark just smile at them and remember that people who try and bring you down are already below you.
My motto is smile as this way it will either warm their heart or totally pee them off, either way you win
Trust me it's a amazing feeling, take control Mark and make your own rules (don't do what they expect you to do, do the unexpected take them by surprise for a change) do not do what they expect, if you do then more than likely your the one who will fall and they expect you to fall, if you snap they win and you look the fool, rise above them Mark and please trust me it's totally worth it!
Please Mark , trust me when I say do the unexpected it totally baffles them, I know because I
do did this with my
sister thorn in my side who I'm pleased to say is now an ex family member
Mark you know I will always have your back so please try this advice before snapping....