My motto (one of them at least) is: Invest in things that hold value after you've lost interest. It is a truth, my personal truth at least, that things hold the most value before you get them (courting/lusting stage) and once you no longer have them. I go through so many different moods and styles that I have a bunch of stuff that I no longer want.
My fix, I have begun to invest in things that are timeless. Ralph Lauren items are, in my modest opinion, some of those things. Not because they are soooo much better than anything else, but because they wear beautifully. Most of the items look just as beautiful when they're .... gently experienced (wow I need to be in PR) as they do when they do brand new.
Some of my new favorite accessories. from Double RL.