Imagine. a train. one of them old fashion ones with a locomotive.
now imagine you're digging a tunnel through a mountain. and you've been digging for two years. that's me.
and the train is coming, high speed, and now its so close its also doing that whistling sound, on top of the chug-chuging. and that's putting you more on the edge...the whistle.
and you're digging and you havent finished the tunnel but you'v managed to make a small dent to other side, or somehow you've made this picture in your head of what's it like on the other side and you cant wait to get there. you're pretty much DESPERATE to get to the other side by now.
but you're still digging, frantically digging, digging digging digging