It seems that double work is unnecessary stress. Unless, of course, it's your two favorite activities that you're willing to spend all day long. Not everyone can handle such a heavy workload because not everyone can switch from one activity to another. I looked for a job based on the salary I could earn. This article https://www.onlytradeschools.com/active-jobs-that-pay-more-than-most-jobs/ helped me make up my mind. The most important thing for me is to have a good income and to have one kind of job, not several.