Hello. I basically could have written your post last week when I got my puppy. I did even post on here about how anxious I was feeling. I picked up my puppy, a yorkshire terrier called Pixie on the 1st of October and from the minute I got home I was a nervous wreck. I couldn't sleep, couldn't eat, my stomach was in constant knots. I am married with 2 kids but the dog was my responsibility. I even ended up ringing my parents and crying for an hour over the overwhelming feelings I had and I am 37!!! I seriously was like 'what have I done, why did i do this, why didnt' I just leave my life the way it was and now i have this puppy and I don't know what it wants or how to traing it' I felt at times like I was drowning. I do suffer time to time with feelings of anxiety and this felt like the baby blues I had after I had my children. So i can completely empathise with you. The good news is last weekend it started to ease and today, apart from feeling sad I had to leave her when I went to work this morning, I don't feel any anxiety apart from a tiny bit that is manageable. And that's just mostly because she still can't go out until next week because she just got her last set of injections 2 days ago and we are both going a bit stir crazy. I know the minute I can get out walking with her not only will the anxiety completely fade but she will force me to get up off my bum and get out. As I said I am married and have 2 children but they are 9 and 7 so too young to help and my husband works extremely long hours so it's mostly just me and the dog. I also work in a hospital 2 days a week so she's on her own those days although next week when her vaccines have kicked in I will leave her in doggy day care for 1 of those days so i suppose it's not too bad for her. Again, though I do feel a bit guilty that she's the only dog in teh house although I only want 1 dog as with my kids more than 1 would be unmanageable so I think the feelings you have are just a sign that you are a good, conscientious dog owner. As she is my 1st puppy I dont' have too much advice about training (i have mine booked in next week to start puppy training classes) but I can vouch for the fact that these are completely normal feelings and they will fade. My dad said something to me that struck a chord he said ' all you are concentrating on are the bad/troublesome things a puppy can bring, don't forget to concentrate on all the joy and happiness aspects they bring in' and he couldn't have been more right. Even my husband who never wanted a dog is loving her. Just relax as much as you can and remember there are dogs that literally survive on the streets and they are very adaptable. Yours will become your best friend and you will laugh and smile more than feel anxious very soon. I am proof of that.