Sometimes, it is not meaningless

Don't focus on you didn't have, but appreciate what you had. If we can do so, life will be much more easier.
Everything's happen has its own meaning, maybe in that moment we don't understand, but as the time goes by, it will come out.

Don’t focus on what you don’t have, but appreciate what you have. If we do this, life will be happier. There is a reason for everything, even if we don’t understand at the moment, but in time things will work out.