Misty, I think once you get to the pushing stage you are then mentally prepared as it has built up to the part where you are close to meeting your baby.
I found for 2nd & third time when I had a suck on gas with DD#2, but threw it away that I was the relieved to be able to finally push, then with my last labour, I was really pumped by the time I was ready to push, I found that bit extra to get pushing & meeting my son...!
I had no pain relief etc & it was exhilerating!

Best wishes, but I believe you'll do wonderfully!