Phrases People Say That We Don't Fully Understand

"Waking up at the right side of the bed",
"Putting your best foot forward"
and "Live life to the fullest"
are some of the things
that we don't fully understand.
There is no real definition for each,
​and it's really up to anyone to figure out.

First, what do we mean when we say 
"wake up at the right side of the bed"? 
Does it literally mean the right side 
as opposed to the left, 
or either the left or the right that feels right to you? 
It's confusing to note, 
and it's very hard to figure it out. 
Which side of the bed is the right side, 
the left or the right? 
And how do we know 
if we wake up at the right side of the bed? 
Whoever said this first 
maybe had no idea what he was talking about. 
Or was he talking about some wisdom here? 
Maybe. 
The only acceptable explanation for this 
is when we end our day with positivity, 
productivity or feeling happy and fulfilled throughout 
means that we woke up at the right side of the bed. 
Or simply, 
we end the day right because 
we woke up at the right side of the bed. 
Just my wholehearted opinion, though.

Next, "putting your best foot forward", 
again something that is hard to grasp because 
the first thing that comes to mind is 
why does it say best foot when we only have two? 
It should be "putting your better foot forward", 
but again, we have to ask ourselves: 
which foot is better, 
the left or the right? 
This is crazy. 
The one who said this first is worse 
than the one who first said 
"wake up at the right of the bed". 
And at the end of the day, 
how do we know if we had put our better foot forward? 
What have we accomplished?
 Suppose we put our better foot forward, 
what can we expect at the end of the day? 
Does it mean that we kept on 
moving forward smoothly without misses or obstacles, 
or maybe not quitting the entire time? 
Or maybe we had a successful, 
productive day, or had a successful journey? 
I wanna be enlightened now, 
I need someone to explain this to me fully. 
I think I will go crazy trying to figure this out.

And last and definitely as confusing 
as the first two is "living life to the fullest". 
Of the three phrases, 
this one's got to have the most number of times
 spoken by anyone. 
When someone has a successful career, 
or is happy and fulfilled 
he always says it's because 
he's living life to the fullest. 
And when someone advices another, 
he will always say just 
"live your life to the fullest". 
Really? 
Well thank you for that wonderful advice, 
but I have to ask you sir: 
how do I live my life to the fullest? 
How will I do it? 
I just don't understand such a life to the fullest! 
But maybe if we give it a try, 
we would say it's living our lives to the fullest
 of our capabilities or abilities, 
doing things without hesitation or inhibition. 
Or living our lives with all our strength 
and knowledge and wisdom maybe, 
or not wasting even one moment of our existence 
so that we can live our lives every second of it. 
Sigh. Whatever...

I don't know what to say 
more about these things. 
I don't have a clear mind for such 
for they are too deep for me 
and the only thing that could make me 
unravel their full meaning 
is when God gives me the wisdom to explain in detail. 
There are so much things in this world 
that we don't fully know 
no matter how hard we try 
because we are only humans, not gods. 
And only gods can fully explain such things.