In Greek literature, fate plays an enormous role. The Greeks undoubtedly believed in fate and, as seen in Oedipus Rex, that it could not be outrun. But does this belief ring true for the modern world, in which we feel as though we have the freedom to make our own choices and shape our own futures? No, fate does not control our existence. We make decisions everyday that change the direction of our lives.
Regret is a big indicator that fate does not govern our futures. It's not an exaggeration to say that all people have had those "what ifs" and "Shoulda, coulda, woulda" moments in their lives. We know that if we do things differently, we would have a different outcome. Life would be pretty pointless if every path we took led to the same destination.