Paralyzed by fear of making the wrong decision and missing my chance

I've been going in circles about this for months and I think the indecision itself is becoming the bigger problem than the actual situation.

I need to get a medical procedure done that's been bothering me for years. It's not life threatening but it genuinely affects how I feel about myself every single day. I've gotten quotes and the cheapest option near me is about $15,000 which I absolutely cannot afford without going into serious debt.

I found out I can get it done internationally for around $3,000 and I've spent literally three months researching clinics, reading reviews, watching videos, checking certifications. I've done so much research that I basically know everything there is to know about this procedure at this point.

But I still can't pull the trigger and actually book it. Every time I'm about to commit I start second guessing everything. What if I pick the wrong clinic? What if something goes wrong and I'm in another country? What if I'm making a huge mistake? So I go back and do more research and the cycle starts again.

Meanwhile time keeps passing and I'm still dealing with this thing that makes me miserable. I'm wasting months being stuck in analysis paralysis when I could've already had it done and been moving on with my life.

I know logically that no amount of research is going to make the decision feel 100% safe. But I can't seem to get past the fear of making the wrong choice. Has anyone else gotten stuck like this? How did you finally just make a decision and stop overthinking?