No one wants to work in retirement. But if you consider how valuable your time is, then working part-time may be something for you to consider. Letโ€™s say you can make $1,000 dollars a month doing something you like to do. Thatโ€™s $12,000 a year on the plus-side. Imagine how much moneyย you need to invest to generate that kind of money. Letโ€™s take risk out of the equation and assume the 10-Year Treasury as the best risk-free choice. Today it yields around 2.6%. You would need to have $461,538 in 10-Year Treasuryโ€™s to generate $12,000. Thatโ€™s a lot of money to invest when you could do it without anyoneโ€™s help other than your own.