Generosity is another quality which, like patience, letting go, non-judging, and trust, provides a solid foundation for mindfulness practice. You might experiment with using the cultivation of generosity as a vehicle for deep self-observation and inquiry as well as an exercise in giving. A good place to start is with yourself. See if you can give yourself gifts that may be true blessings, such as self-acceptance, or some time each day with no purpose. Practice feeling deserving enough to accept these gifts without obligation-to simply receive from yourself, and from the universe.
The only time you ever have in which to learn anything or see anything or feel anything, or express any feeling or emotion, or respond to an event, or grow, or heal, is this moment, because this is the only moment any of us ever gets. You're only here now; you're only alive in this moment.