I had a natural labour with DD, it helped that DH was really excited the whole time, and found everything intriguing and amazing, it really encouraged me, it reminded me that the experience was about the birth of our baby, rather than the pain. he kept checking the machine and telling me when a contraction was coming, he'd get really amazed when a 'really big one' occured. I just took each contraction as it's own individual contraction, and kept thinking "one less". When it got really painful, DH reminded me about my plan to have it naturally, and that I'd already come so far.
Just try and tell yourself that the pain is good pain, not 'reason to be scared' pain. It's healthy, beautiful pain, it's your baby saying "I'm ready to meet you."
I was meant to be induced, and was so reluctant that I spent hours walking and swaying instead of sleeping to try to naturally induce, and it worked! Every contraction after that I was thankful for, I kept thinking "Yay, contractions. DD, you are doing this at your own will."
You can do this, you are a woman, you were made for this.