Not sure what to do now 26m

A year ago, I set up an Amazon FBA business, but it’s not going well. I’ve had a lot of difficulties dealing with Amazon, and I also received incorrect VAT advice from an accountant who told me I didn’t need to register—even though I questioned him about it. Now, I’m facing the consequences, and it looks like this business is going to fail.

At the same time, I’ve been trying to build my skills. I completed a Higher Diploma in Digital Marketing last year and soon will be starting a six-week building a business course. I’m also a nurse, but I’m extremely dissatisfied with my job. I know I need to find a way out, ideally by learning a high-income skill that can generate income, but I’m not sure what to focus on. The only experience I have outside of nursing is some basic video editing and Shopify dropshipping.

Right now, I’m torn between trying to build another business or focusing on developing a skill that could bring in solid income. I don’t want to waste time going in circles, so I’d appreciate any advice from people who have been in a similar situation. What would you do in my position?