I have never been fired before, but I had one job that was a temporary contract where I was not offered a renewal for when the contract ended due to my frequent absences from work. Totally understandable, and I harbour no resentment towards the company because they deserve to have reliable employees!

If getting fired is something that is happening frequently to you, then you need to look at why you're getting fired. Are you missing too much work (my problem), not doing the job properly, have a bad attitude? Once you pinpoint the reasons, it's time to work on them so that you are able to keep a job in the future.

If you find that you are not able to keep employment despite trying your best, it might be time to think about applying for disability.