Expectations in Life!!

The universal truth about life, to the best of my knowledge is, We are born alone and we die alone and what we see, do in between is just a temporary phase, if i can say so
Most of us weather educated or not are aware of this fact. Though, we tend to get carried away by a lot of things, people, situations etc around us. We have a tendency to expect in everything that we do. From the time we wake up in the morning and until we go to bed in the night, we expect almost every minute as to what should happen the next moment. For example before we sip our first coffee of the day, don't we expect the taste of the coffee to be good and that it should give us a good start for the day, and if the coffee is bad or not upto the mark we tend to lose our calm and allow it to disrupt our day. When a thing as small as a coffee can take control of your daily life and deal with your emotions, what would happen if the people around you or people who matter the most or the near and dear ones don't match your expectations? I feel its quite human to feel bad/disappointed when things do not match our expectations.
When i talk about expectations here, i refer to the small things in life. It may be, expecting a dear friend to call you for a smoke or a cup of coffee. When even in such smallest things if we do not get what we expect i guess it is quite obvious to feel disappointed and you begin to question about the entire concept of expectations.
On the hindsight i recall one kannada saying "Aaseye Dukhakke Moola" meaning desires are the sole reason for disappointment
Lastly,it is important to expect in life as there is no life wihout expectation. Having said that it is also important to draw a line somewhere just to avoid any disappointments in life. While it is important to expect, at the same time it is equally important to learn how to manage expectations.
Well! i have not learnt the art of managing expectations, i hope to learn it very soon, Thanks to my growing list of situations of expectations mismatch!!