It is really a blessing from Allah that he has gifted us What are the best days of the year; these 10 days of dhul-hijjah.
It is very important for a believing person to recognize that Allah has created us, you know with multiple dimensions and if we wish to thrive in this life and in the next life, we must look after our physical body, our mental well-being as well as our spiritual State and that is why again these 10 days because we are encouraged to more acts of Good Deeds more acts of worship that will spiritually uplift us and then that in sha Allah will take its consequence on our frame of mind.
And remember that whoever gives up something for the sake of Allah Allah will replace it with something better.
The reason that these 10 days are so massive and so rewarding is in them; We have day of arafah like in Ramadan we have laitual Qadr. The messenger of Allah sallallahu alayhi wa sallam, He summarized the whole Hajj and he said Hajj is Arafah.
The messenger of Allah sallallahu alayhi wa sallam said the day that is promised is the day qiyamah and the day that is witnessed is the day of Arafah and the day is Jumah. And the day of Arafah there is one hour. If this hour passes by a mumin that is asking Allah subhanahu wa’ta’ala for khair (good), Allah would answer the dua of that person.
This hour comes to a servant of Allah while he is asking Allah to protect him from a certain evil then Allah will protect that from him. If you are outside of the hajj and you fast the day of Arafah, then Allah will forgive two years of your sins.