[yuvalkarmi]

You’re asking about how to change a feeling of insecurity to security. My answer is this: give yourself a sense that you have an abundance of options. The feeling of insecurity may stem from a fear of being left without options. So now, not later, interview at a variety of places.

Prepare well for those interviews, and know that if you make it to even 1 place in 10 that you interview (or 20 - whatever it might be), then you have options in case something happens.

You don’t need to actually take any of the jobs. Just create the sense of an abundance of options.