I received this description on "Four Principles of Spirituality" from folks at Vaidyagram, an "Ayurveda Healing Village" in the Tamil Nadu, India, and found them very insightful. Here they are below, in case others in this ecosystem may enjoy as well:
 

"The Four Principles of Spirituality”

The First Principle states:
“Whomsoever you encounter is the right one”

This means that no one comes into our life by chance. Everyone who is around us, anyone with whom we interact, represents something, whether to teach us something or to help us improve a current situation.

The Second Principle states:
“Whatever happened is the only thing that could have happened”

Nothing, absolutely nothing of that which we experienced could have been any other way. Not even in the least important detail. There is no “If only I had done that differently…, then it would have been different…”.

No. What happened is the only thing that could have taken place and must have taken place for us to learn our lesson in order to move forward.

Every single situation in life which we encounter is absolutely perfect, even when it defies our understanding and our ego.

The Third Principle states:
“Each moment in which something begins is the right moment”

Everything begins at exactly the right moment, neither earlier nor later. When we are ready for it, for that something new in our life, it is there, ready to begin.

This is the Fourth Principle, the final one:
“What is over, is over”

It is that simple. When something in our life ends, it helps our evolution. That is why, enriched by the recent experience, it is better to let go and move on.