We must do jobs we detest because we are part of an organized society, and if everyone did what they wanted to do, the world would come to a standstill.
Each human being has the right to two blessings, which are: the blessing to do right, and the blessing to err. In the latter case, there is always a path of learning leading to the right way.
Cowardice, as distinguished from panic, is almost always simply a lack of ability to suspend the functioning of the imagination. Learning to suspend your imagination and live completely in the very second of the present with no before and no after is the greatest gift a soldier can acquire.
Choose the mountain you want to climb: don't pay attention to what other people say, such as "that one's more beautiful" or "this one's easier". You'll be spending lots of energy and enthusiasm to reach your objective, so you're the only one responsible and you should be sure of what you're doing.
Start doing the things you think should be done, and start being what you think society should become. Do you believe in free speech? Then speak freely. Do you love the truth? Then tell it. Do you believe in an open society? Then act in the open. Do you believe in a decent and humane society? Then behave decently and humanely.