Living in a Dhamma community is an ideal place to practice this. Meditation is the means for concentration, which is the tool to break through the fog enveloping everyone who is not an Arahant. At times, in communal living, there is togetherness and lovingness and service. These should be the results of metta not of trying to get away from dukkha. Is it necessary, or am I bored and want to get away from my problems.
Clear comprehension is the mental factor which joins with mindfulness to give purpose and direction.
We examine whether our speech and actions are having the right purpose, whether we are using skilful means and whether the initial purpose has been accomplished. If we have no clear-cut direction, idle chatter results. Even in meditation the mind does it, which is due to lack of training. When we practice clear comprehension, we need to stop a moment and examine the whole situation before plunging in. This may become one of our skillful habits, not often found in the world.