At this stage of my life, I find that what seems just a slight bit of disobedience on my part puts a damper on my enjoyment of God's presence in my life.
When that cloud passes between me and the Son, it's a sign that something is wrong, and it always eventually brings me back to the source of the problem. Then I can acknowledge the thing that is in the way, ask God to forgive me, and immediately bask in the sense of his Presence again.
He has promised never to leave me or forsake me, so I can count on it that he is present always, just like I can know that the sun always shines above the clouds on dark days.
So when it feels like he has moved away, it's really only that there's a cloud between us. And he is always standing by, ready and willing to blow it away. He just waits for us to ask.
David's 3000-year-old songs are universally true. They are as useful to us today as they were to him back then.
Create in me a pure heart, O God, and renew a steadfast spirit within me. Do not cast me from your presence or take your Holy Spirit from me. Restore to me the joy of your salvation and grant me a willing spirit to sustain me.