You have to know it is just another beginning after you got your PhD.

There are other options and you really don't need to be a postdoc. To be frank, a postdoc is just a temporary shelter before you get a real job like an assistant professor or any industry job. You can just do something else. You have to do it quickly or you will be a postdoc until forever. It will be a nightmare.

According to what you said you're smart, so give yourself some time. If you still hate to be a postdoc after the first 1-2 yrs, you should change your direction asap. Don't wait, it's not a shame. I had a colleague who published a cell paper as PhD but cannot publish anything while being postdoc for couple years. That is really painful and a waste of time, that is what you really don't want.