call for all young ladies between 35 and 45 yrs age to lose 10% of weight in 5 mths

hi all.i am going to start my weight loss program from tmrrw. .the plan is to start exercising and controlling food habits sensibly and lose half kg every 7-10 days.i am 38 yrs,mother of two ,working,ht-154 cm,wt-72kg.i hav been inspired by other threads here but feel too amateur both in terms of exercising and dieting.looking for like minded beginners to form a support group and successfully lose weight. pls reply.