Never continue in a job you don't enjoy. If you're happy in what you're doing you'll like yourself you'll have inner peace. And if you have that along with physical health you will have had more success than you could possibly have imagined.
Men ought either to be indulged or utterly destroyed for if you merely offend them they take vengeance but if you injure them greatly they are unable to retaliate so that the injury done to a man ought to be such that vengeance cannot be feared.