Try out this strategy, strike things quickly out of your need/want list and be content, so they no longer become a problem and hindrance to your plans to save/invest.
If you plan to buy a house for your comfort, and it is within your means, seek out a way to get it done quickly.
If you plan to get a car, as you feel you are ripe enough for it, and there's a means to get it, don't hesitate, get it quickly off your list.
if you plan to buy a home equipment, electronics or furniture, and it is super important to you and your comfort, buy it and get it off your list.
The longer you wait at times, the more prices increase, things are not getting cheaper, the longer you wait the more the thought of this need bugs your mind.
Some of what you're saying is true - the basic idea that making lists is a useful aid (often preached by very successful people) but some of the things you describe are not necessarily right. "Buying a house" for most people requires saving up a deposit that can take years and even then, take a few months to close the sale. It is not something you should rush and is often the biggest purchase that people ever make in their life - not something to be taken lightly at all. Cars and even electronics can be frivolous items in many cases too, you might not need the super high spec BMW or teched out fridge that you first stumble upon so it's worth doing a good amount of research on these big ticket items or you can regret spending too much a few weeks later. List building should be thought of on a much smaller, day-to-day scale, not for these mega items.