This might help with urgency: continuity of practice is probably THE most important thing. Mindfulness basically means remembering to practice, it was obviously something highly touted by the Buddha. If you can maintain a state of relative singleness, quietness, and steadiness of mind with maximal continuity you will make serious progress.
If you are constantly dropping out of concentration to allow your mind to wander to some random fantasy, then those fantasies will never get 'dealt' with. The way things are dealt with is by maintaining concentration WHILE wanting to go off into some thought world. I would say that having the courage not to constantly 'peek' into these thought worlds is the most important thing you can have.
So, stress regularity in your practice. Both in terms of routine formal sittings and major effort to maintain off-cushion concentration and presence.