You will be okay.
Just remember this too shall pass, it really will and one day you will look back longingly for those days and nites when your baby wanted nothing more than to be held and loved by you.
Try to see it from the babies view, she has been literally carried by you safe and sound for nine months.
She is so new and just want to feel the love and security only her mama can give her.
Try to shift your view on the situation and take naps when she naps.
Breastfeeding gets so much easier after the learning curve and baby will eat less as time goes on.
Learn to nurse lying down, its so great.
You get to relax and baby gets superior nutrition and nurturing.
Check out "Hey Facebook breastfeeding is not obscene group" there is a community of moms from all over the world who will cheer you on and give you so many tips on breastfeeding and parenting in general.
Take what fits and leave the rest.
Good luck and congratulations.