Great question. Read the answers but remember that it's wildly different for everybody. That said: The life and death matters (sorry): - Never shake your kid, ever - Sudden infant death is partly genetic (not your risk/fault), but still: no toys, pillows, plush animals in the crib -> risk of suffocating The luxury matters: - Breastfeeding does make a difference. If you can manage, try to do it - Don't worry. Whatever…
Oh I forgot one important thing: When you become a parent, you suddenly join an invisible world-wide club. Parents empathize and help each other instinctively in many cases. People will come to your aid when you would never expect it. Accept the help. And pass it on when you see others struggling.
Nope.
We all have constraints: familial support, financial support, etc.
We're all really doing the best we can.