Entrepreneurship truly is a roller coaster. You constantly swing from ecstasy to depression, sometimes on a day by day basis. The underlying truth is that over time this cycle does not cease; it will continue in full force. However, over time things get better. I may be an optimist, but I believe that in the long run things always get better. One of my professors showed my class a graph that described this effect, which I have recreated. [1] In the long run, an entrepreneur's lows can be better than the rest of the world's highs. That is the future we seek.

[1] http://i48.tinypic.com/20hxbbt.jpg