Make it a habit at least every other day, like brushing your teeth or showering. While hard for the first few weeks it doesn't take much motivation to keep doing the same thing.

I ride after I get up (and make myself a lunch bag on work days) six days a week, and haven't missed a day in over a year for anything but medical reasons.

Once beyond puttering around a flat park add 10% to your time or mileage each week except on an easy week out of every three or four so you don't over-do it. Early on that might involve adding days - ex 10 miles a day 3 days a week, 11, 12, 13, 10 miles a day 4 days a week.

A weekly longer ride double your usual daily fix is a good idea.