i have taken laxatives when i dont need to but ive only done it twice and i only took the recomended dosage.

i am 16 years old, 148 pounds, 5'4. i start school in 2 weeks.
my goal is to lose 30 pounds by the time school starts.
dont preach to me. i used to do that, but now its real for me and i NEED to get the pounds off.
i cant starve myself cuz i give in all the time and just eat eat eat.

so for you people out there that know how to lose weight quickly, give me tips. please.

if you use laxatives, what brand do you use, how many do you take at a time, and how often do you take them. this is gross but how long do u spend sitting on the toilet in a day?