The more you understand the mechanism of the mind, the more the possibility is that you will not interfere. The more you understand how the mind functions, the more the possibility is that you will be able to sit in zazen; that you will be able just to sit, sit and do nothing; that you will be able to allow meditation to happen. It is a happening.
But the understanding of the mind will be helpful, otherwise you may go on doing something which helps the mind to continue to function, which goes on giving cooperation to the mind.