> My advice is go on interviews you don't even care about in hopes to get rejected.

This was an immense help when I recently decided to switch companies. I applied to places I didn't really want to work at so that I could either:

1. Get rejected and get used to hearing/reading those words while not taking it personally.

2. Work on my negotiation skills if I actually got an offer.

Either way it was a win-win for me in terms of what I was really trying to achieve.

You may come across a dream job posting one day and if you can block out the worry of rejection you'll have a higher chance of success.