Have a purpose on every ride. If you do, daily training becomes even more productive. Your fitness and bike-handling skills will improve faster.
For example, organize your riding buddies into a paceline instead of a sloppy pack. Do hard turns at the front, then sit in to recover. This type of riding pays off in better drafting skills and a faster cruising speed.
On other rides, stay in a low gear on descents and with tailwinds to develop a faster, smoother pedal stroke. Or, hit every climb in your area to work on your sitting and standing techniques. Or, develop your sprint by lighting the afterburners each time you see a yellow mailbox.