> So I transform that money into something I already know how much it costs and how much I enjoy it. Would I rather change my car for a new one or take 10 one w

> So I transform that money into something I already know how much it costs and how much I enjoy it. Would I rather change my car for a new one or take 10 one week trips abroad? I'll take the later so I decide against the new car even though that will not be exactly what I spend the money for. This is a really important idea to me, it's a way of optimising your spending without doing big central planning. If I would get more from doing X rather than Y, why would I do Y at all? You could then repeat that with 10 trips abroad vs some other thing. You can also compare a relative thing as well. You may need a new car, but can choose between different options. If one is £5000 cheaper than the other - what's the most fun you can possibly have with £5000? Would you rather whatever that list is for you or the more expensive car? Would you rather have a larger rented apartment or £Z to spend at restaurants every month? Or £Z on track days, or whisky, or having an extra few days off a month? All of these things can be answered any way and it's totally fine - the key is to identify what provides the most value to you without getting stuck in trying to optimise your entire life as that's (to me) paralysing.