Stressing about the idea of being a potential manager and working on my business. How do y’all manage your time?

I was looking for an easier, entry-level remote job. All the jobs I applied for rejected me and told me I wasn’t qualified or that they were looking for candidates better suited for the role. I was confused because I was highly qualified.Out of nowhere my mentor quits his job. He had a great job where he learned a lot and did amazing work. Then he recommended me to apply for the nonprofit marketing role. I was like no way, I just graduated college two years ago. He was going to give me advice on how to get through the hiring process and I took a little advice, but for the most part it was my own effort.I got through the final round and they started talking about the onboarding process with me starting in January and they’re checking my references now. Ah I’m stressed if I get this job. How can I balance the two?I’m still learning new skills for my business (an online blog with affiliate marketing and will sell my own products in the future) and now a management job where they have high expectations. I’m exhausted just thinking about it. How many skills I have to learn for each now… see hubwealthy.com/wealthy