Competition gives an opportunity, encouragement and incentive to do good, better, best.
Onur Cobanli explains:
If you want to do better designs, you will need to learn to unlove your existing work, it is so difficult, they are like your babies, your creation, but unless you stop and reflect, to see its issues, you cannot change it for better. Sure this is only for inanimate objects; I am not talking about people! It is about design.