long time no hear

a little of something goes a long way

Only a small amount of something is usually required to produce a great effect.

a week is a long time in politics

In politics, much change can occur in a short space of time.

about time

Far past the desired time.

any time now

Very soon.

any time soon

soon

as the day is long

Unceasingly; very; thoroughly; to a very high degree.

better luck next time

Used to wish somebody hope in future success after a failure.

bide one's time

To wait, especially for a suitable opportunity.