I'd agree - depression does force you to see that something is off-kilter and needs changing - but I've found that it doesn't place you in a mindset that makes it easy to see what is wrong, how to fix it, or how to go about identifying those things. Much of that can be learned so perhaps it's a shift in treatment that's called for (along the lines of cognitive therapy, which I have found beneficial, as well as meditation + yoga, which I have found even more beneficial).
However, I've also learned 'do not make major life decisions while depressed' because often depression lurches to radical and likely long-term damaging solutions which may have a short-term benefit of short-circuiting the depression (e.g. thinking 'quit job immediately without having another one lined up and having family depending on the income').
However, I've also learned 'do not make major life decisions while depressed' because often depression lurches to radical and likely long-term damaging solutions which may have a short-term benefit of short-circuiting the depression (e.g. thinking 'quit job immediately without having another one lined up and having family depending on the income').