For any entrepreneur, to implement and execute at the idea stage is quite difficult. However, it becomes more harder, when he tries to scale up things and move up with the growth graph.
This happens because initially it was only you who was at the core of your company. But as you grow, it more becomes a team work. There are numerous examples of startups which take off with great gusto, but ended up abruptly, failing to sustain a continuous growth graph.