The shofar
Rosh Hashanah.
You might have a few people that would lead a few types of prayers but most prayers involve the congregation in which all members present and able will participate. If you're asking who leads the service, it is often the rabbi with the help of a cantor and sometimes choir. At home, it is the father and/or mother.
Some certainly only celebrate Rosh Hashanah because they feel guilty otherwise, but most Jews choose to celebrate Rosh Hashanah because they want to engage with their history and traditions.
Jewish New Year
golf, relax, read, go for a walk, see grand kids (if they have them) and learn how to play an instument.
The amount of people that died during the trip.
they have many some famous that common people know is Hanukkah, Passover, and Rosh Hashanah.
Sabbath, Pesach, Shavuot, Rosh Hashanah, Yom Kippur, and Sukkoth.
During summer vacations and holidays like Christmas for the special events.
There is no special way of acting during Hanukkah, except maybe to be happy, and grateful to God for the miracles which Hanukkah commemorates.
Rosh Hashanah celebrates the New Year, the anniversary of the date that God created Adam and Eve.
Anne Frank wrote a diary during World War Two that millions of people around the world have read. That is what she did to make herself special.