So what do I do with my life now? Is it just change diaper, feed, burp, read, teach, run errands for baby, drs appts etc?
I can't imagine the next year's of this life this is joyless even moreso than before.
For me, the hardest years were when my children were infants. They needed me round the clock. My firstborn needed to be held every moment she was awake, and she didn't sleep much. My sleep deprivation added to my frazzledness.
But it got better over time. They have turned into kind, smart, interesting adults that I have good friendships with. And in between, they were kind, smart, interesting kids and tweens and teens.
I also found that the very work of caring for my infants -- rocking them, soothing them, feeding them, changing them -- bonded me to them over time, that my babies and I were becoming close exactly because we were going through this difficult time together. So maybe it'll be the same for you, gradually, over time.
Take advantage of whatever resources you can find. If your partner is still in your life, ask him to take care of the baby for a couple of hours while you sleep or get out of the house. If you have access to day care or to friends or relatives who can care for the baby for a while, then let them do that. Getting away from baby responsibilities periodically to do adult things was a lifesaver for me.
I'll be thinking about you. I know caring for a young one can be hard, especially in the first few months, and especially if you feel alone doing it.