Often sellers think about renovating/upgrading to sell their homes when they could have done so sooner AND enjoyed the fruits of their labors for a few months or years. You know the seller who, after cleaning up and fixing up their place for sale, turns to you and says: "I want to buy this place now!" Wouldn't it be better and smarter to make our homes beautiful and desirable a lot sooner than the moment we decide to sell them? Keeping a home in pristine condition and current should be an ongoing responsibility that is simply smart. It can also remove the panic (and potential additional costs) when things have to be done out of urgency.
Addressing all these fix-its early and proactively can also be an effective stress reducer. Knowing you are prepared AND being able to enjoy your pre-emptive efforts fully are solid motivators to address things before they become urgent.