For Christmas my Mom gave me a book ~ "How to Soar Like An Eagle in a World Full of Turkeys" by Robert Stevenson and I really recommend it. It's funny, informative, encouraging and honest.
Here is some facts taken from the chapter Achievement - Failure. When I get really, really frustrated and think "If I get one more "no", I'm going to scream" I can read this chapter, breathe through my nose and press on.
Hope this helps you during those frustrating moments as well.
*A recording company that turned down the Beatles in 1962 stated: "We don't think they will do anything in their market. Guitar groups are on their way out."
*In the mid 1800's the head of the Patent Office in Washington recommended the Patent Office should be closed, because everything that could have been invented had already been invented.
*Beethoven's teacher called him a hopeless composer.
*Albert Einstein's teacher described him as "mentally slow, unsociable and adrift in foolish dreams."
*R.H. Macy failed seven times before his store in New York caught on.
*Babe Ruth struck out 1,330 times, but also hit 714 home runs. (my personal favorite)
*Walt Disney was fired by a newspaper editor for lack of ideas.
*An expert once said of Vince Lombardi: "He possesses minimal football knowledge and lacks motivation."
*The testing director for MGM in 1933 wrote the following memo about Fred Astaire's first screen test: "Can't act! Slightly bald! Can dance a little." Mr. Astaire kept the memo over the fireplace in his home.
Have a great day pressing on!