Iran is doing great in chess recently, and new talents are emerging. God bless you our big boys and girls! Alireza wherever you are, you're our hero!
The most correct quote in chess I have ever heard: The most difficult thing in chess is to win a winning position - Emmanuel Lasker
If you want to improve in blitz, work on these 2 more: Try to know as many openings as you can to avoid early traps and also getting into time trouble. Do as many tactics as you can to develop your vision on pattern recognition.

Garry Kasparov (By many, the greatest champion of all time): Chess is a mental torture!! (probably after losing one or two games?!). Keeping cool while playing chess, facing negative feelings when I lose - specially in better positions - is the main challenge bigger than chess itself for me. Maybe staying out of chess for a while & chill is a good way. Chess is supposed to be fun not destructive. There are million of things in life which worth spending time a lot more than endless appetite for win/points to prove superiority! If you get frustrated with chess its good time to enjoy other enjoyable things in life.

RedArrows