We all know the famous proverb 'The grass is always greener on the other side of the fence'
Frankly speaking, it always seems to us that someone has got something better than we got.
Of course, we often have lack of something. So we think that somewhere is better. But if you make some efforts, you can do well where you are. It is only necessary to know exactly what you want, and make every effort to achieve this. Everyone has their own version, and therefore the answer is ambiguous.