If you want to be happy, check your aspirations and don't compare!

2 key factors that can affect your happiness in life. Rising aspirations and social comparison.

The more you aspire to achieve something e.g. buy a bigger house, the more you will want it over time because after you have a bigger house, you will feel normal after (or we will adapt to the status very quickly) a while and you will begin to want a even bigger one. You will never be happy. 

When you see your friends driving a BMW, you will feel that you should too. If you cannot achieve this, you will not be happy.

So beware of your rising expectations/aspirations and do not compare... If you want to be happy