This is quite true. Some of my friends and family work for themselves and I could not possibly cope with the stress of having to win jobs or worry if I was going to get paid at the end of the month. Despite the romantic ideas of working for yourself, it appears to offer LESS flexibility instead of more - they're always working! Instead of "I can work when and where I want!" it turns into "I am always working, anywhere"
I could happily find things to do in my spare time though. Like playing an instrument, or reading.
I coped by adding a column to my spreadsheet: satisfaction. I charged more per hour for instance for family time, than for engineering time. So trading one for the other was obviously wrong. Still, the spreadsheet total has to meet a bar. I ended up working about 30 hours per week.
I could happily find things to do in my spare time though. Like playing an instrument, or reading.