Often in times we do not 'see' God, we throw a two year-old fit and howl out a faithless prayer like "Why aren't you here, God?" Instead of ignoring or reprimanding us, God remains true, faithful, present, EVER ready, and available to help us just like a mother would her child. We tend to experience separation anxiety when we think God's nearness is untouchable, but the truth of the matter is that He is ever-present and real and ready to help us in our time of need. Our only job is to trust Him and what He says is true.
Do you really believe what God says is true? If so, you can trust that He is real and present in your life. That truth alone relieves a little bit of anxiety, eh?