If our thoughts are peaceful, our meditation is also usually peaceful. If we have spiral or negative thoughts, then we describe our mind as unsettled. We might be unable to “stop” our thoughts.
The goal of meditation is not to stop our thoughts. It’s to notice our thoughts. It’s a place where we can experience a subtle change in our thoughts. Our meditation is as much when we are in the world as it is when we are on the cushion.
If your mind is a little peaceful then it’s possible to experience a little more peace and expand it. As my meditation teacher says, “If we can feel a little peaceful, we can feel a lot peaceful.”