It's very complex and depends on everyone's life situation, I've had money issues in the past, I was stressed but at that time I had many friends and family close which made things ok. Now I am more successful and live abroad, but loneliness kills me, even though I have everything I dreamed of, I think back at the times I was "poor" and I was happier. I also tend to compare myself more with my successful friends and that makes me also a bit jealous. I don't think money will make you happy because there is always someone who has more and there will be always be better things you can't afford. Also we get used to everything fast, you will get used to your "Ferraris" at some point.. What makes you happy is having nice people you love around you and finding a purpose in life.