Opportunity does not knock, it presents itself when you beat down the door

Remind You To Believe In Yourself

Success doesn’t just fall in your lap. You have to get up, do the work, and go find it.

Opportunity does not knock, it presents itself when you beat down the door. - Kyle Chandler

Source: http://www.lifehack.org/articles/communication/30-motivational-quotes-remind-you-believe-yourself.html

When one door of happiness closes, another opens

Remind You To Believe In Yourself

Don’t get stuck worrying about what you’ve missed out on, instead, open up your eyes for the new opportunities right in front of you.

When one door of happiness closes, another opens; but often we look so long at the closed door that we do not see the one which has been opened for us. ― Helen Keller

Source: http://www.lifehack.org/articles/communication/30-motivational-quotes-remind-you-believe-yourself.html