Everyone has their own variation of their dream, some wish to be happily in love with the guy or girl of their dreams; some wish to be rich; some wish for a dream job; some wish for peace, some wish for the freedom to be themselves. The actual dreams may be different, but the way by which the dream is achieved, brought into reality, is the same. In my opinion, it's courage.
Whether you dream of being able to pack your bags and move to a new city in hopes of landing that dream job or gig, or whether you are just trying to live the dream of breaking free from the oppression of hate, or regret, confronting your fear of making the first move is the first step towards achieving your dream.
In a sense, when you mask your dream and continue to live your day-to-day life comfortably, you are essentially torturing yourself. Depriving yourself of what makes you happy is stressful, and whether or not you realize it, it does take a toll on your body. Unhappy, angry folks who are always grumpy at the office or grocery store are likely bitter individuals who let their dreams slip past them. They can't sleep at night because their mind wonders beyond what actually happened that day and the what-if spirit lurks nightly, reminding these people of what could have been or could be.
My biggest fear is that I, or someone I know, will likely let their dreams slip past them, unknowingly, and then BAM - it's too late. Telling that special person, "I know this is awkward, but I love you," or an unprecedented, "Will you marry me?" or even taking a chance and starting a new life in an unfamiliar city may very well be the push you need towards landing you near your dream.
Don't be foolish and take irresponsible risks, but don't be practical either. Nothing really powerful has ever happened by someone being "safe."