OP, I know exactly how you feel, I was in your position 22 years ago, out of all of my friends who also were, all of our children are happy, balanced adults, all have gone onto university and have done really well, as have all of their mothers,we all have degrees, great jobs and careers.
I get very stabby when I hear people being judgemental about mother's ages, I did both, young and old(30s), there are good points to both,
as for the "help' bit, lots of people get help, I didn't, my family lived in another country, not handy for baby sitting.
Just keep doing your best and it will be good enough, and when those with their judgy pants up their arse feel they have the right to comment, smile and use the old MN favourite, "Did you mean to sound so rude?"
If we had been able to have all of ours younger we would of, after my first it took well into double figures to get the next round, we had a lot of miscarriages ,still borns and a death before we got two more,
I spend a lot of time comfort friends who are only now in their 30s and 40s finding out it not always a given, the difference they haven't got a spare decade to dedicate to the project of having a baby.
I think this attitude that it is wrong to have your babies at an age when your body is best up for it, is dangerous and leads to a lot of heart break.