To start with, humans are blessed with good grey matter than their ancestors from animal kingdom. Science says, even in one's life time, Mind never stops evolving ever since it's journey from mother’s womb to grave. So it is normal for brain to be working always on matters from mundane to significant to totally irrelevant even while awake or asleep. If it is not, then you are called innocent or stupid or insane or schizophrenic. So to be caught up in thoughts is a good thing to start with, for it’s a sign,brain is in active mode.
While the anatomical part of thoughts lies in grey(brain) cells with its trillion neuron transmitters, the source of thoughts can be subconscious or conscious stimuli like people, events, places, atmosphere, circumstances etc. The direction of thoughts can be 3600 but quality of thought being short or long, negative or positive, deep or random depends on many variable factors like culture, experience, educations, situation and in a way how your grey cells are conditioned to process. Is it out of curiosity or maturity or irrationality is a safeguarded secret, unless one is near a face reader or connected to a telepathist distantly.
These thoughts being circulated ambiguously in the folds of tunnels of grey matter crave for a voice called Words. Sometimes they get heard out as excellent with flying colours, sometimes as raw, not ripe enough and that’s where the trouble begins. The trouble can be minor or major considering how seriously you are taken by the rest. After all they are just words, who care. But the words do care, pushed by gigantic waves of thoughts that propel them to Act. So finally they end up doing something, which is normally called Action.
As per an adage actions speak louder than words. Ah! What a journey for thoughts from microscopic tiny cells to get manifested. Real face time with real world. Great! If the actions are good, they may end up in limelight from near & dear, paid or unpaid, honest or pretence. If actions are bad, doers may feel bad or point it to external stimuli smartly or innocently for being the root cause. The journey of actions doesn’t end there. The primary physics class comes in handy that remind Newton’s 3rd law: “For every action there is a reaction” so some good actions get replicated minutely, some bad actions get reformed secretly. Most take pride on being cutting edge and prefer to justify bad actions as their survival instincts. Having travelled so far, THE TRUTH that “Our thoughts are the primary source of our actions” gets lost. The by-product of mind called Ego overshadows the memory..... To see the truth, and do damage control will take time. How long, depends and is variable from person to person. Does it take one life time to come out of now seasoned bad actions or reactions?
As per another ancient wisdom, any action, called Karma gets recycled birth after birth as good karma or bad karma, until the carrier called human masters to balance it out and rise above the cycle of karma. As the finish line looks many life times away, is it too daunting a journey to embark?But for humans, a race above all other existing species of life, it is still a possibility (proven by many enlightened fraternity). Genetically predisposed with a mind and wisdom to choose between good or bad, in their thoughts, they lay the success of their journey called Life. Good thoughts breed good words. Good words lead to good action (karma).And Good Karma, at least makes humans more HUMANE.
A wise man once said, in single line, Mind your thoughts!!!