Do I Dare?

My entire life, I have been a dreamer, a planner, a thinker, a hoper. 
I dream of big things. I plan out how things will be if those dreams come true. I think of what I will do with those plans and those dreams, and I hope that someday they materialize.
Many times I've seriously considered giving up. Just stopping...stop dreaming, stop planning, stop thinking, stop hoping, just stop living. But from somewhere deep inside, a little voice whispers, "Don't give up. Hope is still here." 
So, off I go again, creating dreams in my head and chasing them.
Yet, I've reached a point in my life where I catch myself thinking, "Am I too old to dream anymore? Am I healthy enough? Do I have enough time left to chase after a dream, plan for it, think about it, even hope for it?"
Still, the dreams beckon me...They almost shout out my name at times, or so it seems. They say, "We're not done yet! Don't give up on us just yet."
This afternoon as I took my walk I looked up at the sky and I asked God, "Do I dare? Do I dare to pursue another dream? Even if you give me many years, am I strong enough to handle another disappointment? The heartbreak of another unfulfilled dream, another "No!" from you? Do I dare to take another chance?"
My body tires so easily these days and I just fear that I will lack the physical energy to see this new dream through.
My mind screams, "GO FOR IT!", but my body says, "I'm tired. I just don't know if I can take even the possibility of another disappointment."
I sure wish things were easy.
Do I dare to take a risk, or do I play it safe and take a nap?