I'll be honest, this is probably the primary fear I have that's kept me from even attempting something in startup-land. Even if I have an idea (EDIT: or discove

I'll be honest, this is probably the primary fear I have that's kept me from even attempting something in startup-land. Even if I have an idea (EDIT: or discover an existing startup) that I feel passionate about now, I have no idea how I'm going to feel in X months from now. My passions are fickle and manifold.