These are the times that try men’s souls. The summer soldier and the sunshine patriot will, in this crisis, shrink from the service of their country; but he that stands it now, deserves the love and thanks of man and woman. Tyranny, like hell, is not easily conquered; yet we have this consolation with us, that the harder the conflict the more glorious the triumph. What we obtain too cheap, we esteem too lightly: it is dearness only that gives everything its value.

Thomas Paine

This is a wonderful statement. The more you have to do to get something,the more it's worth to you.