Asking for a friend 
We have a 13 week old springer. Considered beagle (scared off by tales of appalling recall and difficult to train), Labrador (2 horrid barky ones next door and decided too large for us), whippet (my first choice, but had heard horrors of accident proneness and high prey drive and we also have a cat), various others I can’t remember. Chose a springer in the end largely because dh grew up with one, but also because we wanted a dog that would enjoy a good couple of long walks a day, easy to train, not too big.
I keep wondering whether we made a mistake. Don’t get me wrong, we love him, no going back, I just worry that he is quite highly strung - our dog trainer looked at his pedigree and said because there were lots of field trial champions in there on one side we may find that he has a high drive and will be challenging and will need to be kept mentally occupied - so walks without a purpose incorporating lots of sniffy games will make him anxious because he needs to know what he’s doing it for. For some reason this has really worried me that even when we are past the puppy stage we will have a difficult dog. The breeder breeds for pets, not as working dogs, kennel club assured.
Is this just normal puppy blues? Did anyone else not regret getting a dog, just felt that they had picked the wrong type of dog?