Smart people know what they can do, and they should be temperate in everything they do ~ the same is true of worshipping stars, just like their works.

Everything you do must be meaningful. To set your own goals, all actions are goals. Neither study nor work can be half-hearted. Don't promiscuous between friends, make choices and help yourself.

People's time is very limited, so there is no need to worry about things that are meaningless or powerless to change. This is a waste of time and energy! Just do your own thing.