“ If you have built castles in the air, your work need not be lost; that is where they should be. Now put the foundations under them. ”
Source: Walden
Similar Quotes
Dream your own dreams, achieve your own goals. Your journey is your own and unique. 
You never know what's around the corner. It could be everything. Or it could be nothing. You keep putting one foot in front of the other, and then one day you look back and you've climbed a mountain. 
Be brave enough to live the life of your dreams according to your vision and purpose instead of the expectations and opinions of others. 
Whenever you want to achieve something, keep your eyes open, concentrate and make sure you know exactly what it is you want. No one can hit their target with their eyes closed. 
You can't cross the sea merely by standing and staring at the water.