Can someone regain a Beginners Mind when it has gone? Shunryu Suzuki famously said in Zen Mind, Beginners Mind


  In the beginner’s mind there are many possibilities, but in the
  expert’s there are few


But if one's beginners mind has gone is it possible to regain it. If so what can one do to get a beginner's mind back again. 

The motivation for asking this is that after a years practice I had a very strong feeling of my beginners mind leaving me. I felt very fresh, vibrant and curious about practice for about a year then one day I could literally feel that ebb away. From that point my practice was different - maybe not worse but definitely has a different quality to it. It feels more like work I guess. So I've always been curious to whether that initial state would ever come back and if there was anything I could do to encourage it.
In the Mahasi tradition we don't have the idea of beginner's mind, just a continuous refinement of the process. Many times throughout my practice, I've learned that some phenomena or thought process was just that—where previously I mistook it for a deeper reality. And I continue to experience these refinements.

But to attempt to answer your question, try not to hang on to the desire for Beginner's Mind. It will come back on its own. In addition, I would say be gentle to your mind and body. Those particular helped me the most when I was struggling in my practice. Maybe it will work the same way for you, in that being gentle with yourself may allow the Beginner's Mind to return when you least expect it.