No real regrets even though mine are teenagers and have done some pretty classic teenager things but I don’t blame myself, I was a pretty wayward teenager myself and my parents were absolutely wonderful with their own flaws so I’ve always used that as a bench mark.
In the spirit of the OP I wish I had started driving my daughters to Starbucks drive through on the other side of town for overpriced drinks and toasties earlier.
It took a few trips for the penny to drop that this was them crying out for some time with me to talk. We went nearly every day some weeks and when I took the time to drive and just listen I learnt so much. We don’t go so much now but when it’s requested I now understand what it means.
Also for the OP I read once somewhere that as long as you spend 15 minutes per day per child giving them undivided attention you’re doing OK. That’s saved me some days (single mum for 8 years, self employed, multiple businesses) when I was run ragged.
My soon to be 18yr old DD1 sent me a ‘I love my mum I owe everything to her’ type TikTok video at 1am this morning (makes a change from the usual recipes she wants me to make) and they both did an amazing speech about me at my recent wedding so I am happy they are happy and I'm sure they would say I'm not perfect and have made loads of mistakes but they know I’ve got their back and that’s all they need to know. I am their constant and that’s enough.
I used to say to them ‘I’m making this up as I go along you know’ to most parenting dilemmas. Because it’s true and I hope my honesty will help them as they become mums.
I do sometimes worry I’ve instilled too much independence and role modelling as they are both very single and not wanting / needing a man and both want children. They don’t see dads as a necessity and both want to run their own businesses and have nice things!