It is shockingly obvious that the bulk of dissatisfaction stems from vanity; and the more one manages to curb the latter, the less one experiences the former. It is evident, indisputable. However, a state of complete disillusionment is usually necessary to truly realize this. There is no disillusionment without expectation, and there is no dissatisfaction without vanity. Feeding this vice is a grave mistake, because it never leads to anything good. To destroy it, one must sometimes sever ties, cut roots; but the effort is worth it. One can then practically conclude that all dissatisfaction is groundless, and that life is much better when one rejects the habit of complaining.