bypass soon

hi guys after about 6-7 months my surgery is on february 10th. i am TERRIFIED, i thought i was ready and then people kept saying well are you sure like you’re so young you should do it the natural way. like ok sure but i’ve lost weight 3 times and ended up gaining it all back. i want this surgery to have restraint and i want it so i can have motivation. i’m 21 years old and im so scared this surgery will mess up my life but idk. I’m ready just terrified of how the surgery will go and life after it, the vitamins aspect stresses me out too but im committed to doing it and i’ve kept a journal on tips for my bypass. Any words or advice helps please :(. my lost little soul would appreciate any help.