Happy Teacher’s Day

Should I thank you Life,
For what you have taught me? 
It is irreversible and unforgettable. 
You give no second chance
There is no time
For a backward glance.

You have set 
The toughest lessons 
And sudden twists 
And unexpected turns 
And all this 
On slippery and steep pathways,
With no promises of getaways.

You give no hint 
Of the next test 
So brutal are your methods of teaching, 
So Life, tell me 
How do I thank you, 
For being my ruthless, 
Ultimate Guru?