Don't think of cost. Think of value.
Successful people willingly do what unsuccessful people are unwilling to do.
Being alone does not mean you are lonely, and being lonely does not mean you are alone.
You become what you focus on and like the people you spend time with.
People are more what they hide than what they show.
If you expect the world to be fair with you because you are fair, you're fooling yourself. That's like expecting the lion not to eat you because you didn't eat him.