I used to think the Houses of Hogwarts are too hard-defined, until I came across this Reddit post, that argues it is not the traits you possess, but the traits you value most of all, that your house selection is based upon. A Hufflepuff need not necessarily be hard working. It just means s/he values hard work, as in aspires to work hard, whether they actually do it or not is secondary and up to the individual.
Albus Dumbledore: It is our choices, that show what we truly are, far more than our abilities.
That explains a lot about why Peter Pettigrew, Neville Longbottom and Hermione Granger were Gryffindors, or why Gilderoy Lockhart was a Ravenclaw, or why Crabbe and Goyle were Slytherins. Pettigrew was neither daring nor chivalrous, but he aspired to be both, which explains why he hung out with the people he wanted to become like, but failed. To be fair to him, he did show great loyalty to Voldemort (i.e. the morals he chose to live with) towards the end of his life, and was brave enough to cut off his own hand for his master.
Personally, I was a little disappointed (not gonna lie) when Pottermore put me in Slytherin (prior to my Hogwarts is Here days) because I saw myself as smart, but never ambitious or resourceful (maybe that is who I secretly aspired to be?). When I joined HiH, I was glad I got to pick Ravenclaw. I took the quiz again in late 2015, when the new Pottermore website released, and I was sorted into Ravenclaw. That made me start to think of myself as perhaps a Slytherclaw (Slytherin + Ravenclaw). Maybe I value wit and wisdom more now? Or maybe hanging out with the Ravenclaws in the League of 42 rubbed off on me? To be honest, half of my dorm are closet Hufflepuffs, I can tell. They’re so adorably sweet (something I tend to associate with Hufflepuff, for some reason).
The Sorting Hat is notorious for refusing to admit it has made a mistake in its sorting of a student. On those occasions when Slytherins behave altruistically or selflessly, when Ravenclaws flunk all their exams, when Hufflepuffs prove lazy yet academically gifted and when Gryffindors exhibit cowardice, the Hat steadfastly backs its original decision. On balance, however, the Hat has made remarkably few errors of judgement over the many centuries it has been at work.
(Source: Sorting Hat on Pottermore)
But, after reading what J. K. Rowling had to say about the sorting (she has officially stated on record that the Sorting Hat is never wrong), I now think I am a Ravenpuff (Ravenclaw + Hufflepuff). I value wit, wisdom and knowledge, but I also aspire to work hard, with dedication and patience (qualities I do not think I possess or exhibit right now).
I can still be extremely resourceful and cunning. That is who I am. If the Sorting hat picked me based upon who I was, I would be a Slytherin. But if it picked me based upon what I value, I would be a Ravenclaw, or worst case, a Hufflepuff (never a Gryffindor, interestingly).
There you go.
Bonus: This Seamus Gorman video on YouTube-