Without training one must reinvent the wheel without advantage, without taming there is no one to trust, without guarding one is ever vulnerable to pernicious influences, without restraint resources are wasted. This is a rigorous practice, even with kindness and flexibility there is the need for persistence so one becomes a mountain. A mountain sometimes disappears in the mist and then reappears cool and shining. Sensei points out that mindfulness is awareness of mind, we watch the mind, our thoughts, we watch them arise and pass away, not just on the cushion but 24/7.
If a struggle arises and mind vies for domination, either with an unwanted thinking process or habitual pattern we can use the tricks of the trade described in Sensei's workbook The Missing Peace. Noble Speech is a good example, it can be very challenging to let go habitual patterns here. If you notice a pattern you wish to change use one of the unplugging techniques she describes, call her if you want to discuss it. A speech pattern is best changed for me by substituting another speech pattern like a chant, that occupies the speech centers of the brain and helps you to rewire your own house so to speak.
The mind that is tamed trained guarded and restrained is like a reliable working dog, a good friend, affectionate and calm, alert and intelligent. The mind that is without this benefit is like a stray, hungry and anxious, likely to snatch or snap.