[Baz]

The most effective way to overcome tardiness is to understand time needed to get where one is going.

If one has to be there at 7 - and it takes 15 minutes - leave no later than 6:30-6:40.

Newsflash.....no one is going to be on time if they wait until 6:50...or later.

Of course this concept requires both planning ahead and caring enough to do what is needed. Some people just do not have that capability.