"Never think something cannot be done"

In an era, when you have a plethora of information on your fingertips, whenever an idea , a feature, a initiative, or a small improvement; If any of it feels impossible, there is a high chance it isn't. 
And that was truly the best career advice I ever received. 

Don't deny it until you try and fail. 
Because Maybe you'll end up being "The one who made it happen".