How do I get over my mental block and start training

Like many of you I have always wanted to be a pilot. Not a day goes by where aviation doesn’t cross my mind. I’ve done everything I can to try to talk myself out of flying for years to no avail. I’ve seen an AME about getting a class one (no issues), made quite a few friends who are pilots (most of them are currently CFIs), got a desk job at an aerospace company, taken an embarrassing amount of discovery flights, etc. Finally through living like a hobo for a few years I’ve stuffed away enough money to feasibly get from 0-cfi as long as I don’t quit my day job. I find myself stuck looking at statistics of failure rates for those who chase the dream and I’m worried about parting ways with my life savings to come out empty handed. My friends who are pilots seem pretty confident in my ability to succeed but I can’t really get over this mental block. I know that if I never try I’ll regret it. Is this normal? Do I just need to nut up and go for it?