Rabeinu Saadya Gaon teaches that there are 10 lessons of inspiration that we should focus on when hearing a Shofar blast.
1 - we blow on Rosh Hashana as part of the program to proclaim Hashem as our King.
2- it serves to wake us up to remember our purpose in life.
3- it reminds us of the Shofar blowing at Matan Torah.
4- it reminds us of the messages of all of the Prophets which are also as Shofar wake up calls.
5- reminds us of the noise by the destruction of the Beis Hamigdosh which we pray Hashem should rebuild.
6- reminds us of Akeida where an animal with horns was slaughtered instead of Yitzchak. We learn to be as devoted as the Avos.
7- the sound inspires us to fear Hashem.
8- reminds us of the great day of judgment in the future.
9- pray the great Shofar blast that will usher in the redemption.
10- reminds us of the great wake up of Techiyas Hameisim.
Now may be a good time for a gem of Torah study.