The lack of money will certainly contribute negatively to your overall happiness, so you need a minimum at least. But as there is a minimum we should consider a certain cap to it as well.

I was interested in this and found a study that analyzed at what moment money can't keep adding points to your happiness level. Here's the article I wrote if you're interested: https://medium.com/p/7b0faf13f789

Anyways, these other factors are so important. Being in peace with yourself, using your time wisely, finding a purpose, etc. are all variables that add significantly to your overall happiness that we usually tend to leave aside (or not give them the importance they require).

Thanks for the insights!