Originally Posted by Piak
Number three is correct.
It means that it is not wise to try to make everyone like you, so you really should not try. You will only be discouraged.
Just do your best and some people will like it. Hopefully a lot of people will like it, but never hope or think that all people will like it.
It reminds me of this.
"You can please some of the people some times, but you can't please all of the people all the time."
- For Teachers