Dress well... take it up a notch from what you would normally wear, something that makes you feel good about yourself, something comfortable... comfortable shoes... what your body feels on the outside can reflect how you feel on the inside, and vice versa...
A spritz of your favourite, but subtle perfume...
And just BE happy... WHAT EVER IT TAKES to think happy thoughts. Don't let your mind wander to the problems in your M, even though it could be tough being around HIS family...
And when you're there, maybe you can try out some 180s... if you would normally be helpful, do less... if you were normally distant, get right in there and engage everyone... and vice versa, of course... not over the top kinda stuff, again... just small adjustments that would be only a little more than subtly noticable...
