Fat?? Fit????

fat already.
recently eat so much. all becoz of my colleague & agency!
they keep on asking out for dinner la.. lunch la...
we lunch in Bangkok Jam / Bangkok Jazz / Chakri Palace / Pizza Italia / Genki Sushi / Dome Cafe / Butter Crab / etc...
nice food yet fattenning!

i wan to keep fit!
so, from today onwards, i wont' eat till drop!
i wan to fit fit... not fat fat..
how? teach me teach me ..
help me!!!