Where to Focus Your Attention in Meditation? Within or Out?

When we meditate, where is the best place to put our focus? Within or out? This is a common question and the answer isn't as simple as one or the other. Mindfulness is about becoming aware of both. But if that's the case, how do we divide up our attention between the two? Sometimes we can be so lost in our mind that we are completely unaware of our surroundings.…