You are attempting the wrong, unnecessary and almost impossible thing.
Why?
Because you are making the mistaking of thinking mind is your adversary and you need to keep it quiet, etc., all of which involves struggle, effort, etc.
But, know that the mind is your friend and NOT your enemy.
Why?
The mind knows what it is wanting to do, in the form of goals, desires, ambitions, wants, and what not, deep in its subconscious.
So, it keeps throwing up thoughts to plan and execute speech and bodily tasks to achieve the goals, desires, ambitions, wants, and what not, buried deep in your subconscious.
Why does that mind do that?
Simple.
Mind is just an algorithm- and data-consuming machine/computer that has a past, and has NO choice but to keep doing what it is doing, UNLESS it can be reprogrammed.
So, do not try to control thoughts or keep the mind quite, etc., but instead change its programming.
How can that be done?
Through understanding.
What understanding?
Understanding that the mind is a faithful computer/instrument (that is why the Sanskrit term for min is antahkarana meaning inner instrument) brought into existence on account of the desires (vasanas/samskaras) present at a deeper layer (karana sarira or causal body) than the mind (subtle body or sukshma sarira).
Why are desires there?
On account of ignorance.
What is that ignorance?
Mistaking the body-mind to be oneself, which imposes a limitation on oneself, and so one resorts to overcome that finitude by trying to acquire things in the world and thereby overcome one’s finitude, which of course is “chasing a red herring”.
What is the way out then?
To realize that happiness is a calm mind, and happiness is our own nature.
How to realize that?
By paying attention to what happens to one’s happiness or one’s inner being the moment one’s mind becomes restless on account of desiring something.
Then one notices that the unhappiness that has set in impels one to do something or the other in this world to acquire the objects of one’s desires.
Nothing wrong with that.
Keep doing it until you understand 100% the futility of this game of samsara that we are playing.
And when that understanding arises, the mind automatically keeps quiet as far as the egoic-I game that it keeps playing and at the same time allows you to function in this world without the need to keep hunting for happiness.
Then one’s actions go on, the world goes on, but one acts out of the fullness of happiness and not for seeking or obtaining happiness.
Such actions do not bind one and do not create fresh karma.
Know Thyself 