How to make the distance to target adjust itself

Hello! I have made a script that impulses the player towards the click. When the distance is small enough (say, lesser than 10), the force stops being added.

 if(travelToTarget == true)
         {
             //target is the position of the mouse click
             float distanceToTarget = Vector3.Distance(player.transform.position, target);
             float distanceToTargetLess = distanceToTarget * 0.9f;
 
             // as it turns to less, the less makes it even less
             if(distanceToTargetLess < distanceToTarget)
             {
                 Debug.Log("Distance: " + distanceToTarget);
 
                 target.z = 0;
 
                 Vector2 direction = (target - player.transform.position).normalized;
                 rb.AddForce(direction * speed, ForceMode2D.Impulse);
             }
             else
             {
                 travelToTarget = false;
             }
         }
 
     }

The problem is, if you click within 10 units from the player, he doesn't move. So you would have to set the small-enough distance to change depending on the distance to target, which I made * 0.9 (if the distance was 10, then it would have to be 9 for it to stop).

But, stay with me here, if the distance goes from 10 to 9, now it has to go from 9 to 8.1, and so on.

So what am I getting wrong here?? How do I make the small-enough distance to adjust with the distanceToTarget and not make it decrease infinitely?