Changing ATF/FILTER O-RING HELP!

I have dropped the pan and bought the filter/atf. I am just having a severe problem trying to get the o-ring/seal out to put the new one in. I was thinking maybe just use the old one. The only thing is, I have messed the old one up pretty bad trying to get it out. I have put soo much force to it also, like bending the screwdriver kinda force no budge.. I really need some help. I need a working car for work...

Thanks
Greg