Spiritual Experiences

I had a spiritual awakening 12 years ago. In which I had a feeling of total calm and peace and everything around me had a “light” around it. In fact after this awakening I would spend hours just driving around looking at everything and seeing God in everything around me. This feeling left me months after it happened and now I can only get brief glimpses of this feeling and seeing this light around everything. My question is this- Is there a way to get this back? Or is that a once-in-a-lifetime occurrence? Does the new feeling wear off and you get used to seeing this light?