When I was a kid I played a lot of cricket, and was quite good. As a thirteen year old I had an opportunity to play for a club at a higher level, but I decided not to go to the final training session, and missed out on getting into the team. I bailed out because of some insignificant logistical reasons, and I remember thinking that it wasn't something I wanted to do anyway due to loyalty to my old club.
I am going through a similar thing at the moment where I am starting to interview for two really interesting jobs, neither of which I am yet sure I am perfectly suited for, or if they want me for the job, or if I want to work there. I don't know how it would impact my life and the things I am wanting to do, and the temptation is to pull out now due to the overwhelming uncertainty.
But this time I am going to stay in the process and see where it leads. There is the possibility they will decide I am not quite right for the job, and that I will decide the same. Or it may just be perfect. The only way to find out is to keep showing up.