This 240 question quiz may be the test to end all personality questionnaires...if you have the time.
Tik Tok user, Psychologee, shared the quiz online in a video that now has over 11 million views and she mentions that after taking the quiz you'll find out your character strengths. Apparently the more you use your strengths in your life, the happier you may be.
All you have to do is head to AuthenticHappieness.org and take the VIA Survey of Character Strengths. The website's a little slow right now because 11+ million people are trying to crack their personality code :)