Why should Singapore not be complacent in her achievements?

Singapore is a small nation and do not have much landmass or resources. We are easily targetable and can be easily conquered by other countries,hence if we get complacent and brag about our achievements,we will probably collapse as other countries target and attack us out of hatred and jealousy of our achievements.Another possible reason is that we should learn from this and continue to strive for better as a nation.Being complacent gets us nowhere,so we should improve from our achievements.