Sacrifice is an interesting word. It's kind of negative.
I like 'choice' rather than sacrifice - I 'chose' to live in the outback while I my kids were small, and chose to live simply and chose to build a property portfolio. I chose spend my spare time self-educating - listening to podcasts, seminars, and reading books that expanded my knowledge.
I also chose to not go to Europe, and not fly interstate every year, and not eat out very much, and not buy designer gear, and not watch Big Brother. (Some choices were easier than others!
)
None of it was sacrifice, just choices. If I chose differently, I would have 'sacrificed' my business, my properties, my knowledge, my waistline. You're always sacrificing something in every choice you make - problem is that most people don't think about exactly what it is they're sacrificing when making decisions.