Kikidi

I know its "normal" to be nervous about surgery. But im starting to freak out about my surgery coming up in one week. I "only" need to lose about 80 pounds. But I do have severe GERD, sleep apnea, and I feel exhausted and joint pain all the time. How do I know im not making a huge mistake ? Im 30 years old, will I be regretting this for the rest of my life ? Is it normal to be this worried/panicking ? Id say im leaning 75-80% towards backing out of the surgery, and dont just know what to do...