I'm self employed in the hospitality sector. Started when I was 22 and getting out soon (25 now).
I don't regret being self employed. The positives definitely outweigh the negatives for me. I have learned a lot from this business, from managing cash flow, employees, books, time management etc
Initially I started for the money. Didn't really think about all the stress that would come with it. 70+ hr weeks, paper work on the weekend, workers calling in sick, breaks in during the night, constant equipment failure, 5-6hr night sleeps, no holidays, no paid leave, customers that have woken on the wrong side of the bed etc
hospitality is only for the few, its a hard industry and you really need to find a good business if your buying establish.
If you don't have too many commitments, young family, needy partner then I go ahead. You will learn a lot from it.
I'm lucky that I worked hard and the business kept growing. But I have had enough of it and saved enough for my next venture. Something that would require less time and managing.