This is a nice thought coming from you @hranhuk

Do you know that story of receiving a happy and wonderful good morning in the morning? Still mostly from people you consider? This can propel you to take different and more positive actions throughout the day.

You got me there honestly, I've witnessed this on occasions.
The kind of reception I get in the morning sometimes determines how the rest of my day will look like especially in the office.

If I happen to wake up from the wrong side of the bed or meet someone from such condition then forget about that day, it's going to be more or less uninteresting and sad.

So yes the things we encounter sometimes can determine our mood for the time being.