The simple way to Liberation or Moksha is to (1) allow the mind be still and (2) not take yourself to be the body-mind.
However, if you still want to know more about this kind of approach, I wrote an article about it here that goes into more detail.
Think of it this way: there is never a doer, even when thought says there is one. This knowledge can set you free. Don’t worry if it seems like you’re a doer. It’s just like the sun rising and setting – it seems like the sun is orbiting the earth, but the knowledge is there telling us that it is the earth that is orbiting the sun.
Don’t worry too much about the appearances or whether or not you get lost in thoughts. Sometimes, in fact very often, thoughts needs to express themselves, and in expressing themselves you can learn about yourself on the human level/level of the mind. A bit of worry can be quite good, as it helps us prepare for future events.
The following is an excerpt from the book ‘Annamalai Swami Final Talks’ (bold added by me):
Annamalai Swami: ….Your mind is an insubstantial shadow that will follow you around wherever you go. Attempts to eliminate or control it cannot succeed while there is still a belief that the mind is real, and that it is something that can be controlled by physical or mental activity.
Question: But this shadow mind must still be eliminated by some means.