One of the wondrous milestones on the spiritual journey is realizing that you are not the mind, and that its nature is not yours.
No matter how torturous it may feel right now, the good news is that the mind can be healed. It can also be trained. Just as you have trained it to overthink, overindulge, wander, or scatter, it can be taught to be still, focused, and attentive through regular mindfulness practice.
We also come to realize that all the random, unwise and even scary thoughts that arise in our mind are not necessarily true, nor do they need to be ours. We do not have to act on them. You always have a choice.
Once when a devotee complained that his mind always wandered and that he could not control it, sage Ramana Maharshi immediately replied:
“It is the nature of the mind to wander. You are not the mind.” He continued, “The mind springs up and sinks down. It is impermanent, transitory, whereas you are eternal.” (Talk 97)
Inner Journeys 