4 years from retirment and I am sick of flying.

Currently at 16 years been flying for the last 8. I use to love everything about this job but now I am just so burnt out. I had a friend die in a crash last year and I just havent been able to recover since. I have 3 kids and I just can't shake the guilt of what I would be putting them through after seeing it first hand. I want to make it to retirement but I am considering getting out, the guilt and anxiety are killing me.

TLDR: MTP with 1000ish hours struggling to make it to retirement after having a close friend die in a crash. Curious what my options are.