That's part of his rugged, analytical, semi-critical charm though! Klytus wouldn't be Klytus if he didn't, well, do Klytus-y things!
I don't think he's saying to intentionally search out socially strenuous occupations, but not to let social anxiety be the deciding factor in what you become. Don't let the anxiety define you. If you always wanted to be a primatologist, but social anxiety drives you to be the solitary lighthouse keeper instead... you've basically given yourself over, wholly, to the enemy.
How would you feel about yourself after that? You'd have defined your entire being as "anxious" ... everything about you would reflect that. What chances would there be of tackling the problem then? That's not to mention the deterioration of social skills that would result from isolation, making it even harder to function with others.
If you honestly have always wanted to be a night watchman, gravedigger or toll booth operator, then go for it! If you want to be something, don't let social anxiety keep you back. Be what you think would make you happiest, not what seems easiest. Fight the good fight, shoot for the stars, man! You can do it!