When withdrawing money to live on, I don’t care how many stock shares I own or what the dividends are – I care about how much MONEY I’m able to safely withdraw from my total portfolio without running out before I die. A lot of academics have analyzed total market returns based on indices and done Monte Carlo simulations of portfolios with various asset allocations, and have come up with percentages that you can have reasonable statistical confidence of being safe.
The International Accounting Standards Board (IASB) uses the following definition: "Income is increases in economic benefits during the accounting period in the form of inflows or enhancements of assets or decreases of liabilities that result in increases in equity, other than those relating to contributions from equity participants." [F.70] (IFRS Framework).
My dad is in  a similar situation as we speak, things have not been going well for him at work (but I do think he has himself to blame) and seems likely he will get let go.  Mr. Budgets and I both see how our parents are and we totally want to be on the other end of the spectrum when it comes to how they handle money. It motivates us to save and invest even more.

Maritime trade was carried out extensively between South India and Southeast and West Asia from early times until around the fourteenth century AD. Both the Malabar and Coromandel Coasts were the sites of important trading centres from as early as the first century BC, used for import and export as well as transit points between the Mediterranean region and southeast Asia.[60] Over time, traders organised themselves into associations which received state patronage. Historians Tapan Raychaudhuri and Irfan Habib claim this state patronage for overseas trade came to an end by the thirteenth century AD, when it was largely taken over by the local Parsi, Jewish, Syrian Christian and Muslim communities, initially on the Malabar and subsequently on the Coromandel coast.[61]

An obvious example is over exposure to bank stocks, which have been excellent investments for over a century.  Though a foundation of most portfolios, bank stocks do involve more risk at certain stages of the economic cycle than many realise.  Being less exposed to bank shares in the last few months could have preserved some capital.  So, a more diversified approach can help mitigate some of these risks.