Dreams are such a wonderful thing.
You can do anything, be anything, go anywhere, and it doesn't cost a thing. I can dream of something as outrageous as seeing commercial spaceflight become affordable enough in my lifetime that I may one day walk on the moon, or even Mars. Or something as simple as hiking across Tibet or Nepal one day soon. Or something as wonderful as finally meeting someone to fall in love with and spend the rest of my days beside. There is no limit.
And that's what can make dreams so dangerous.
It's awfully easy to get so caught up in dreaming that we get our heads up in the clouds, where we can't see what's around us. Placing our minds so far into “then” that we completely lose “now”. And there's so much to see now. If we trace back into our lives, we may find that we're living many of our old dreams in the current moment. We may also find many opportunities to to find the path that will one day lead us to our dreams of today.
So dream away, but don't lose the now in the process. Take the time to appreciate the dreams you've already fulfilled, and take the time to seek out the dreams you haven't. And don't worry if some of those dreams are unrealistic, or perhaps even a bit silly. Walk towards them nonetheless, and revel in every step you make on that path. You just might find things you hadn't even dreamed about on the way.