Start now and repeat your mantra in a loop. You will see that it is not that hard. Of course, sometimes you lose yourself in the present moment and have no thoughts at all.
The important thing is to use it as soon as you are aware that thinking is coming. Of course, you have tasks that require you to think and it’s ok.
However, if you have space and within that space useless thinking comes to mind then you ought to repeat your mantra over and over again. It’s you taking control over the thoughts of your mind. It’s 100% achievable. It just requires a bit of discipline
