My answer to your query

The trouble with people nowadays is they blame their failures to life:  whenever they feel somewhat awry they muttered Life isnt fair, Life is complicated, Life is cruel & killing me..so forth, but then when things seem right with them they see Life like a beaming sunshine or a starry sky.

I fully understand Life, well that is according to my own quest and query, and  i would share just abit of it and hope you will  understand why i want for you to know this.

You often talk about Life's complexities but as often as you talk about it you always account Life to your failed love relationships..of course with some faulties that concerned family, job, friends & others.  Love relationships always entangled with your Life. And why it is so?

You've been in a relationships for a decade or more; a relationship rows that goes on a habit of failures and eventually became a pattern.
It isn't Life's oblivious doing.  Life do not rule us. We create Life.  We are entitled to choices and what we chose is our options. , so look who is unfair.  Life has no choices neither options.  It just sit there and watch as you journey upon it. 

A love relationship is a good material for people's journey to Life  owing to its inspirational  themes and desperations that evolve within it.  However, it is not the only basis in creating Life.   Life need some basically simple
ingredients like sweetness, bitterness, saltiness and spices to make Life a life.  Life must have ups and downs for one to say "What a wonderful life" ;  and these elements must have the exact quality of consistency coupled with the right frequency for you to have a meaninful life.   A Life that you created;  the consequential efforts of your journey.

So, dont be so depressed about your life.   The journey never stop until it's done...the famous saying of "dont give up"....for when the journey
is done,  then you can clearly see what kind of life you created. 

I tell you, my dearest one,  pay attention to your journey, mold it on a daily basis,  and live this  present life less seriously.  And as you walk thru try to enjoy every bit of it.  :)ily