I highly recommend nursing as a career. I'm a second career nurse. I was 32 when I graduated from nursing school, passed NCLEX, and started working med-surg at a local hospital. I love nursing and I have no regrets about it. Being able to do something were I feel I am making a positive difference in the work, helping other people in a tangible way, and seeing the gratitude of patients and family members is a priceless experience that I wouldn't trade for any other profession. My job is also flexible, it pays well, and it can't be automated our outsourced. I don't have children but if I did, I would steer them towards a career in health care (nursing or something else), regardless of gender, throughout their childhood.
That being said, I am not sure if your post reflects doubts about nursing or doubts about life choices and becoming an adult in general. Maybe I am wrong, but your post reads as if you're young, late teens or early 20's. It is normal to have a lot of anxiety at that age and feel confused about who you are, what you want to do with your life, etc. Emerging adulthood is a really hard period in life, and that difficulty is what resulted for me in a useless liberal arts degree and string of low-skilled, miserable jobs as receptionist and later a human resources recruiter. It took time and maturity for me to figure out who I was and that I wanted to be a nurse. So I think your first step is to think about how much of your anxiety is related to nursing and how much is about emerging adulthood.