Yogi: Is it possible to think and be aware at the same time?

Sayadaw: Yes, for example, you can be aware of planning – planning is there and awareness is also there. Later, you can also see if there is defilement in the planning/thinking; therefore, you can know if right thinking or wrong thinking is happening. 

You should stop thinking when you notice wrong thinking. When planning and you’re aware, sometimes you can see worry planning, anxiety planning or wanting planning. You’re planning or thinking with what state of mind? You can know later.

Whether thinking is wholesome or unwholesome, if awareness is missing, then the mind is daydreaming, i.e. deluded. 

So, when you can know the thinking mind, you should continue to know.