Find short opportunities throughout the day to meditate. Longer meditations are great, but every moment of Mindfulness counts. Things that in the past felt like a waste of time--I now use as opportunities to practice.
My top 5:
1. Sitting on an airplane
2. In a taxi, Uber or Lyft
3. Waiting for an appointment (OK to have eyes open--glance down instead of looking around)
4. Between meetings at work
5. Before falling asleep at night