Some wealthy trust fund babies were asked how much wealth they thought they would need to really feel financially secure long term. They had inherited wealth ranging from tens, up to hundreds of millions. Almost all of them named a figure about double their personal net worth, regardless of what that net worth was.
You have to actively resist this anchoring behavior. You have to remind yourself that just because your neighbor has a 50k car, it doesn't mean that your 10k car is not a good fit for you.