Here's a success story for you, hopefully it gives you hope.
When my DS was 2yo, his dad walked out on us leaving me a single mother. I was left in thousands of pounds of debt, no assets apart from my inexpensive car, and I had to scrape together the deposit to rent a new house etc. I was already working full time, with high nursery fees and the debts to contend with, plus I received zero maintenance for 18 months from DS dad, and I had to find the money for the divorce etc. I was living off a credit card. I had no idea how I was going to dig myself out of the hole I was in.
It was hard, but I kept working, I worked hard, I found ways to be flexible. Sometimes I would take my laptop home so I could pick DS up from nursery and then I'd carry on working after he went to bed. I 100% made sure he had the stability and love he needed, including a roof over his head and food on the table.
I moved roles, I changed to a part of the company that would support my goal of becoming an accountant. I studied in the evenings, sometimes until 2am, most nights of the week. But I was always there for DS, even if I occasionally fell asleep at work! I spent 3 years working full time and training in the evenings, taking exams every few months and then I became a chartered accountant.
I kept working hard, I kept being there for DS, I kept taking my laptop home! I got myself a job earning £50k a year.
Now, I'm remarried to a lovely man, I've repaid my debts, DS is 7 and I'm due DS2 in May. We own our house, I've still got my little car, I'm very happy. DS is very happy.
You absolutely can do it, you can be a great mum and have a career. I'm behind you xx