A very well known proverb, Time and tide wait for no one apply to personality too. How? Come lets discuss.
A good personality makes on a gentleman. And the main characteristic of a true gentleman is punctuality. Whenever you go for a meeting or any occasion, leave 10-15 min before time (of course depending on the distance too). It is ok to reach 5 minutes earlier, but being 5 min late creates a wrong impression on the other person.
If you are punctual enough, it not only creates a better impression on your colleagues but also makes you a gentleman which develops your personality. This is how being simply punctual can contribute towards your developing personality!