You need to strike a balance. I'm not saying you shouldn't make large amounts of sacrifice at something(Not just start ups), but you also need to do move on to something else if despite everything and many attempts things don't work out.
Being stuck in the status quo will eventually make your problem much worse. You will continue much more sacrifices without achieving nothing in the end.
I apologize, I believe I misread your original post as being risk adverse. Absolutely agree with you here though - striving to fail fast is perhaps the one bit of startup advice that is nearly universally applicable.
Being stuck in the status quo will eventually make your problem much worse. You will continue much more sacrifices without achieving nothing in the end.