For this reason I would seriously consider re-reading "Mindfulness in Plain English" and then putting down all the books and spending three months or so establishing the strongest practice routine you can. Ideally meditation is taken at least twice a day. You can certainly start with short sessions - 20 minutes or so is good - yet within three months an hour at the start of the day and at an appropriate point in the evening will be a good milestone. Maybe you're already there?
Meditation practice is "practice" - it is the changes in us that we take away from the meditation cushion where the real action begins. These will not emerge merely from rational understanding but in sitting meditation, in practicing the teachings.